McGraw Electric Co
McGraw EleActive Patents
0
Total Holdings
34
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2730462A | Impregnation of absorbent materials | Expired / Lapsed | 1953-04-07 | 1956-01-10 | 2 | Details |
| US2721719A | Adjustable bracket | Expired / Lapsed | 1951-09-15 | 1955-10-25 | 0 | Details |
| US2698888A | Control system and receiver therefor | Expired / Lapsed | 1949-11-04 | 1955-01-04 | 0 | Details |
| US2686643A | Conduit spacer | Expired / Lapsed | 1949-01-18 | 1954-08-17 | 0 | Details |
| US2665396A | Circuit breaker | Expired / Lapsed | 1951-11-02 | 1954-01-05 | 0 | Details |
| US2597023A | Automatic electric toaster | Expired / Lapsed | 1948-08-11 | 1952-05-20 | 0 | Details |
| US2577985A | Coffee maker | Expired / Lapsed | 1947-06-26 | 1951-12-11 | 0 | Details |
| US2575631A | Vacuum mandrel | Expired / Lapsed | 1950-12-29 | 1951-11-20 | 0 | Details |
| US2567413A | Expulsion gap construction | Expired / Lapsed | 1947-12-05 | 1951-09-11 | 0 | Details |
| US2551858A | Resistor type of isolator for lightining arresters | Expired / Lapsed | 1949-08-22 | 1951-05-08 | 0 | Details |
| US2544845A | Transformer construction | Expired / Lapsed | 1948-09-13 | 1951-03-13 | 0 | Details |
| US2511540A | Room heater | Expired / Lapsed | 1946-08-24 | 1950-06-13 | 0 | Details |
| US2503880A | System of regulation | Expired / Lapsed | 1946-03-30 | 1950-04-11 | 0 | Details |
| US2493542A | Electric heating unit | Expired / Lapsed | 1947-07-29 | 1950-01-03 | 0 | Details |
| CA457396A | Snap acting thermostatic switch | Expired / Lapsed | — | 1949-06-14 | 0 | Details |
| US2450983A | Heat storage control system | Expired / Lapsed | 1945-04-27 | 1948-10-12 | 0 | Details |
| US2431195A | Automatic electric toaster | Expired / Lapsed | 1944-10-09 | 1947-11-18 | 0 | Details |
| US2420188A | Automatic electric toaster | Expired / Lapsed | 1945-01-06 | 1947-05-06 | 0 | Details |
| US2377440A | Water heating system | Expired / Lapsed | 1944-01-01 | 1945-06-05 | 0 | Details |
| US2368774A | Water heater control system | Expired / Lapsed | 1944-01-19 | 1945-02-06 | 0 | Details |
| US2360265A | Encased electric resistor unit | Expired / Lapsed | 1942-11-02 | 1944-10-10 | 0 | Details |
| US2357906A | Electric resistor unit | Expired / Lapsed | 1942-11-02 | 1944-09-12 | 0 | Details |
| US2307347A | Automatic bread toaster | Expired / Lapsed | 1939-10-12 | 1943-01-05 | 0 | Details |
| US2266152A | Water heating system | Expired / Lapsed | 1941-03-31 | 1941-12-16 | 0 | Details |
| US2266147A | Off-peak water heating system | Expired / Lapsed | 1941-03-14 | 1941-12-16 | 0 | Details |
| US2266252A | Water heating system | Expired / Lapsed | 1940-11-18 | 1941-12-16 | 0 | Details |
| US2266146A | Off-peak water heating system | Expired / Lapsed | 1940-10-17 | 1941-12-16 | 0 | Details |
| US2266210A | Off-peak water heating system | Expired / Lapsed | 1940-10-12 | 1941-12-16 | 0 | Details |
| US2262286A | Coffee maker thermostatic control means | Expired / Lapsed | 1940-06-06 | 1941-11-11 | 0 | Details |
| US2257883A | Automatic electric toaster | Expired / Lapsed | 1939-12-26 | 1941-10-07 | 0 | Details |
| US2236402A | Thermal timer for automatic toasters | Expired / Lapsed | 1939-06-16 | 1941-03-25 | 0 | Details |
| US2171895A | Compensated bimetal thermostat | Expired / Lapsed | 1937-02-23 | 1939-09-05 | 0 | Details |
| US2029590A | Rotary motor or pump | Expired / Lapsed | 1930-07-03 | 1936-02-04 | 0 | Details |
| US1937288A | Heating and refrigeration apparatus | Expired / Lapsed | 1932-01-23 | 1933-11-28 | 0 | Details |