Weatherhead Co
WeatherheaActive Patents
0
Total Holdings
50
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3966263A | Blend back proportioning valve for brake system | Expired / Lapsed | 1975-08-25 | 1976-06-29 | 17 | Details |
| US3954121A | Vent check valve | Expired / Lapsed | 1975-03-17 | 1976-05-04 | 10 | Details |
| US3587157A | Method of making a valve stem | Expired / Lapsed | 1967-11-20 | 1971-06-28 | 0 | Details |
| US3540760A | Quick connect coupling | Expired / Lapsed | 1969-03-24 | 1970-11-17 | 0 | Details |
| US3442537A | Composite forged fitting of diverse metals | Expired / Lapsed | 1964-10-01 | 1969-05-06 | 0 | Details |
| US3145035A | Pipe coupling having a flexible sealing lip | Expired / Lapsed | 1958-09-10 | 1964-08-18 | 2 | Details |
| US3097866A | Pressurized hose end | Expired / Lapsed | 1960-11-14 | 1963-07-16 | 2 | Details |
| US2958545A | Rupturable union device | Expired / Lapsed | 1958-09-15 | 1960-11-01 | 0 | Details |
| US2904068A | Appliance regulator | Expired / Lapsed | 1956-05-14 | 1959-09-15 | 0 | Details |
| US2900999A | Valve seal | Expired / Lapsed | 1955-07-21 | 1959-08-25 | 0 | Details |
| US2742764A | Liquid ammonia flow system and valve | Expired / Lapsed | 1952-10-15 | 1956-04-24 | 2 | Details |
| US2737202A | Appliance regulator | Expired / Lapsed | 1954-05-04 | 1956-03-06 | 0 | Details |
| US2687315A | Short coupling converter | Expired / Lapsed | 1949-11-23 | 1954-08-24 | 0 | Details |
| US2659565A | Cylinder valve | Expired / Lapsed | 1950-10-05 | 1953-11-17 | 0 | Details |
| US2659128A | Method of making dehydrators | Expired / Lapsed | 1950-01-21 | 1953-11-17 | 0 | Details |
| US2570421A | Hose coupling | Expired / Lapsed | 1948-03-06 | 1951-10-09 | 0 | Details |
| US2556308A | Faucet | Expired / Lapsed | 1946-06-29 | 1951-06-12 | 0 | Details |
| US2536745A | Tube coupling | Expired / Lapsed | 1946-06-14 | 1951-01-02 | 0 | Details |
| US2534577A | Valve | Expired / Lapsed | 1945-09-19 | 1950-12-19 | 0 | Details |
| US2517534A | Pressure regulator | Expired / Lapsed | 1946-07-24 | 1950-08-08 | 0 | Details |
| US2492917A | Valve | Expired / Lapsed | 1946-02-18 | 1949-12-27 | 0 | Details |
| US2492006A | Pressure cylinder | Expired / Lapsed | 1945-05-17 | 1949-12-20 | 0 | Details |
| US2489929A | Anticreep brake control | Expired / Lapsed | 1947-01-30 | 1949-11-29 | 0 | Details |
| US2479683A | Flexible hose coupling | Expired / Lapsed | 1946-01-11 | 1949-08-23 | 0 | Details |
| US2469851A | Tube coupling | Expired / Lapsed | 1946-01-18 | 1949-05-10 | 0 | Details |
| US2463293A | Hose end | Expired / Lapsed | 1946-02-18 | 1949-03-01 | 0 | Details |
| US2460653A | Hose end | Expired / Lapsed | 1946-04-20 | 1949-02-01 | 0 | Details |
| US2457472A | Packless globe valve | Expired / Lapsed | 1944-05-15 | 1948-12-28 | 0 | Details |
| US2442566A | Self-adjusting tappet | Expired / Lapsed | 1945-04-19 | 1948-06-01 | 0 | Details |
| US2441344A | Coupling | Expired / Lapsed | 1945-05-14 | 1948-05-11 | 0 | Details |
| US2432592A | Tubular connection | Expired / Lapsed | 1943-10-25 | 1947-12-16 | 0 | Details |
| US2423677A | Compressor pressure control | Expired / Lapsed | 1946-02-02 | 1947-07-08 | 0 | Details |
| US2417504A | Cable tension regulator | Expired / Lapsed | 1944-05-11 | 1947-03-18 | 0 | Details |
| US2343235A | Universal pipe fitting | Expired / Lapsed | 1941-11-28 | 1944-02-29 | 0 | Details |
| US2333349A | Method of making hose couplings | Expired / Lapsed | 1941-09-26 | 1943-11-02 | 0 | Details |
| US2319487A | Tank and method of making same | Expired / Lapsed | 1940-10-28 | 1943-05-18 | 0 | Details |
| US2295829A | Vibration dampener | Expired / Lapsed | 1940-11-29 | 1942-09-15 | 0 | Details |
| US2210993A | Method of making work holding devices | Expired / Lapsed | 1938-02-12 | 1940-08-13 | 0 | Details |
| US2157733A | Brake | Expired / Lapsed | 1935-02-07 | 1939-05-09 | 0 | Details |
| US2152102A | Fitting and method of making same | Expired / Lapsed | 1935-01-28 | 1939-03-28 | 0 | Details |
| US2131459A | Brake | Expired / Lapsed | 1935-02-01 | 1938-09-27 | 0 | Details |
| US2073909A | Method of attaching couplings to hose ends | Expired / Lapsed | 1935-01-23 | 1937-03-16 | 0 | Details |
| US2059920A | Compression fitting | Expired / Lapsed | 1934-04-27 | 1936-11-03 | 0 | Details |
| US2015541A | Hose coupling | Expired / Lapsed | 1933-01-03 | 1935-09-24 | 0 | Details |
| US2000680A | Hose coupling | Expired / Lapsed | 1931-12-18 | 1935-05-07 | 0 | Details |
| US1956554A | Method of making valve bodies | Expired / Lapsed | 1932-04-27 | 1934-05-01 | 0 | Details |
| US1949668A | Coupling | Expired / Lapsed | 1932-01-18 | 1934-03-06 | 0 | Details |
| US1942273A | Control device | Expired / Lapsed | 1932-08-30 | 1934-01-02 | 0 | Details |
| US1924007A | Fitting | Expired / Lapsed | 1932-01-18 | 1933-08-22 | 0 | Details |
| US1921709A | Pipe coupling | Expired / Lapsed | 1932-02-05 | 1933-08-08 | 0 | Details |