National Cylinder Gas Co
National CActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2766765A | Method and apparatus for maintaining uniform flow resistance | Expired / Lapsed | 1952-04-30 | 1956-10-16 | 0 | Details |
| US2670224A | Sphero-conically generated fitting | Expired / Lapsed | 1947-02-08 | 1954-02-23 | 0 | Details |
| US2517628A | Temperature responsive device | Expired / Lapsed | 1947-05-13 | 1950-08-08 | 0 | Details |
| US2493388A | Magnetic control system | Expired / Lapsed | 1946-08-17 | 1950-01-03 | 0 | Details |
| US2355983A | Electric welding machine | Expired / Lapsed | 1943-01-23 | 1944-08-15 | 0 | Details |
| US2336626A | Torch cutting machine | Expired / Lapsed | 1941-05-28 | 1943-12-14 | 0 | Details |
| US2254307A | Flame hardening | Expired / Lapsed | 1939-03-18 | 1941-09-02 | 0 | Details |
| US2254306A | Apparatus for flame hardening | Expired / Lapsed | 1939-03-18 | 1941-09-02 | 0 | Details |