Hoover Co
Hoover CoActive Patents
0
Total Holdings
75
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3542178A | Flexible coupling for separable shafts | Expired / Lapsed | 1969-03-25 | 1970-11-24 | 0 | Details |
| US3407994A | Shaft seal | Expired / Lapsed | 1966-11-15 | 1968-10-29 | 0 | Details |
| US3287837A | Steam and spray iron | Expired / Lapsed | 1964-09-17 | 1966-11-29 | 2 | Details |
| US3218742A | Control means for a steam and spray iron | Expired / Lapsed | 1964-09-17 | 1965-11-23 | 1 | Details |
| US2998474A | Electrically conductive extensible hose | Expired / Lapsed | 1958-09-29 | 1961-08-29 | 0 | Details |
| US2963749A | Continuous method of and apparatus for making extensible an… | Expired / Lapsed | 1958-11-13 | 1960-12-13 | 0 | Details |
| US2961007A | Flexible hose | Expired / Lapsed | 1955-12-06 | 1960-11-22 | 0 | Details |
| US2832986A | Convertible air supported suction cleaner | Expired / Lapsed | 1956-04-06 | 1958-05-06 | 0 | Details |
| US2832978A | Floor polishers | Expired / Lapsed | 1954-04-13 | 1958-05-06 | 0 | Details |
| US2807824A | Suction cleaning tools | Expired / Lapsed | 1955-05-03 | 1957-10-01 | 0 | Details |
| US2807825A | Nozzle for suction cleaners | Expired / Lapsed | 1954-11-15 | 1957-10-01 | 0 | Details |
| US2807867A | Electric motors | Expired / Lapsed | 1951-06-22 | 1957-10-01 | 0 | Details |
| US2797730A | Method and apparatus for making an extensible flexible hose | Expired / Lapsed | 1955-12-06 | 1957-07-02 | 0 | Details |
| US2751038A | Air supported cleaner with control | Expired / Lapsed | 1954-05-14 | 1956-06-19 | 0 | Details |
| US2743787A | Air supported cleaner with diffuser | Expired / Lapsed | 1954-04-07 | 1956-05-01 | 0 | Details |
| US2739616A | Flexible hose | Expired / Lapsed | 1954-10-04 | 1956-03-27 | 0 | Details |
| US2713381A | Method of making flexible hose | Expired / Lapsed | 1953-02-06 | 1955-07-19 | 0 | Details |
| US2688343A | Flexible hose | Expired / Lapsed | 1948-04-03 | 1954-09-07 | 0 | Details |
| US2668378A | Electric iron | Expired / Lapsed | 1952-06-27 | 1954-02-09 | 0 | Details |
| US2661025A | Flexible hose | Expired / Lapsed | 1948-04-03 | 1953-12-01 | 0 | Details |
| US2641300A | Hose making machine | Expired / Lapsed | 1950-05-19 | 1953-06-09 | 0 | Details |
| US2641302A | Method of making flexible hose for suction cleaners | Expired / Lapsed | 1950-05-19 | 1953-06-09 | 0 | Details |
| US2641301A | Method of making suction cleaner hose | Expired / Lapsed | 1947-11-22 | 1953-06-09 | 0 | Details |
| US2597806A | Suction cleaner hose | Expired / Lapsed | 1946-10-30 | 1952-05-20 | 0 | Details |
| US2594417A | Suction cleaner construction | Expired / Lapsed | 1948-12-15 | 1952-04-29 | 0 | Details |
| US2566275A | Suction cleaner bag | Expired / Lapsed | 1949-09-30 | 1951-08-28 | 0 | Details |
| US2550099A | Flexible hose for suction cleaners | Expired / Lapsed | 1949-06-14 | 1951-04-24 | 0 | Details |
| US2527775A | Electric iron with signaling means | Expired / Lapsed | 1948-09-04 | 1950-10-31 | 0 | Details |
| US2463409A | Inert gas absorption refrigeration system, including a fan | Expired / Lapsed | 1942-07-09 | 1949-03-01 | 0 | Details |
| US2418371A | Suction cleaner | Expired / Lapsed | 1943-04-08 | 1947-04-01 | 0 | Details |
| US2409078A | Suction cleaner | Expired / Lapsed | 1943-10-13 | 1946-10-08 | 0 | Details |
| US2405127A | Valve | Expired / Lapsed | 1943-06-09 | 1946-08-06 | 0 | Details |
| US2400192A | Refrigeration | Expired / Lapsed | 1943-08-09 | 1946-05-14 | 0 | Details |
| US2386505A | Refrigeration | Expired / Lapsed | 1942-07-09 | 1945-10-09 | 0 | Details |
| US2373609A | Refrigeration drive | Expired / Lapsed | 1943-10-21 | 1945-04-10 | 0 | Details |
| US2366562A | Refrigeration | Expired / Lapsed | 1943-08-09 | 1945-01-02 | 0 | Details |
| US2363447A | Refrigeration | Expired / Lapsed | 1941-06-25 | 1944-11-21 | 0 | Details |
| US2348861A | Suction cleaner | Expired / Lapsed | 1941-06-21 | 1944-05-16 | 0 | Details |
| US2342908A | Suction cleaner | Expired / Lapsed | 1941-12-15 | 1944-02-29 | 0 | Details |
| US2343227A | Suction cleaner | Expired / Lapsed | 1939-08-23 | 1944-02-29 | 0 | Details |
| US2340440A | Suction cleaner | Expired / Lapsed | 1941-03-29 | 1944-02-01 | 0 | Details |
| US2325820A | Suction cleaner dirt bag | Expired / Lapsed | 1940-05-16 | 1943-08-03 | 0 | Details |
| US2322921A | Suction cleaner | Expired / Lapsed | 1939-01-26 | 1943-06-29 | 0 | Details |
| US2320541A | Commutator for dynamoelectric machines | Expired / Lapsed | 1941-04-10 | 1943-06-01 | 0 | Details |
| US2317569A | Filter bag support for suction cleaners | Expired / Lapsed | 1940-11-22 | 1943-04-27 | 0 | Details |
| US2312641A | Suction cleaner | Expired / Lapsed | 1941-03-17 | 1943-03-02 | 0 | Details |
| US2303800A | Method of making agitator brushes | Expired / Lapsed | 1940-08-29 | 1942-12-01 | 0 | Details |
| US2300267A | Suction cleaner brush | Expired / Lapsed | 1940-05-16 | 1942-10-27 | 0 | Details |
| US2297370A | Refrigeration | Expired / Lapsed | 1938-07-20 | 1942-09-29 | 0 | Details |
| US2295944A | Refrigeration | Expired / Lapsed | 1939-08-17 | 1942-09-15 | 0 | Details |
| US2291769A | Air conditioning apparatus | Expired / Lapsed | 1938-01-13 | 1942-08-04 | 0 | Details |
| US2283835A | Inlet valve for suction cleaner dirt bags | Expired / Lapsed | 1940-02-09 | 1942-05-19 | 0 | Details |
| US2258740A | Suction cleaner | Expired / Lapsed | 1939-01-28 | 1941-10-14 | 0 | Details |
| US2257540A | Air conditioning system | Expired / Lapsed | 1936-06-25 | 1941-09-30 | 0 | Details |
| US2240540A | Refrigeration | Expired / Lapsed | 1939-03-25 | 1941-05-06 | 0 | Details |
| US2232766A | Suction cleaner | Expired / Lapsed | 1938-02-02 | 1941-02-25 | 0 | Details |
| US2218180A | Suction cleaner | Expired / Lapsed | 1938-04-14 | 1940-10-15 | 0 | Details |
| US2212679A | Dusting tool for suction cleaners | Expired / Lapsed | 1937-09-27 | 1940-08-27 | 0 | Details |
| US2204614A | Method of making a heat exchanger | Expired / Lapsed | 1938-05-16 | 1940-06-18 | 0 | Details |
| US2182446A | Electrical connector | Expired / Lapsed | 1935-04-26 | 1939-12-05 | 0 | Details |
| US2152241A | Absorption refrigeration | Expired / Lapsed | 1935-06-03 | 1939-03-28 | 0 | Details |
| US2114118A | Odor dispenser | Expired / Lapsed | 1934-08-06 | 1938-04-12 | 0 | Details |
| US2112304A | Demonstration accessory for suction cleaners | Expired / Lapsed | 1936-02-03 | 1938-03-29 | 0 | Details |
| US2094138A | Suction cleaner | Expired / Lapsed | 1936-03-12 | 1937-09-28 | 0 | Details |
| US2072690A | Suction cleaner | Expired / Lapsed | 1933-12-30 | 1937-03-02 | 0 | Details |
| US2064397A | Suction cleaner | Expired / Lapsed | 1934-07-13 | 1936-12-15 | 0 | Details |
| US2054612A | Electrical connecter | Expired / Lapsed | 1933-04-22 | 1936-09-15 | 0 | Details |
| US2008972A | Suction cleaner | Expired / Lapsed | 1933-08-11 | 1935-07-23 | 0 | Details |
| US2008476A | Suction cleaner | Expired / Lapsed | 1934-05-18 | 1935-07-16 | 0 | Details |
| US2002624A | Suction cleaner | Expired / Lapsed | 1931-02-06 | 1935-05-28 | 0 | Details |
| US1999667A | Suction cleaner | Expired / Lapsed | 1932-04-23 | 1935-04-30 | 0 | Details |
| US1948249A | Electrical connecter | Expired / Lapsed | 1933-04-22 | 1934-02-20 | 0 | Details |
| US1928944A | Suction cleaner | Expired / Lapsed | 1931-10-12 | 1933-10-03 | 0 | Details |
| US1911367A | Spraying device | Expired / Lapsed | 1931-04-04 | 1933-05-30 | 0 | Details |
| US1818587A | Refrigeration | Expired / Lapsed | 1927-02-21 | 1931-08-11 | 0 | Details |