Westinghouse Lamp Co
WestinghouActive Patents
0
Total Holdings
18
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2013411A | Pluro-metallic rod | Expired / Lapsed | 1932-06-04 | 1935-09-03 | 0 | Details |
| US1992973A | Ceiling lighting unit | Expired / Lapsed | 1932-10-01 | 1935-03-05 | 0 | Details |
| US1972162A | Heater element electron emitting cathode | Expired / Lapsed | 1930-01-28 | 1934-09-04 | 0 | Details |
| US1914762A | Cathode glow discharge device | Expired / Lapsed | 1930-09-11 | 1933-06-20 | 0 | Details |
| US1893286A | Method of carbonizing metals and alloys | Expired / Lapsed | 1928-05-25 | 1933-01-03 | 0 | Details |
| US1835113A | Protective coating for metal surfaces | Expired / Lapsed | 1928-04-20 | 1931-12-08 | 0 | Details |
| US1795730A | Electron-emission device | Expired / Lapsed | 1924-12-30 | 1931-03-10 | 0 | Details |
| US1733744A | Composite x-ray target | Expired / Lapsed | 1926-01-16 | 1929-10-29 | 0 | Details |
| US1653367A | Misch-metal wire | Expired / Lapsed | 1925-01-29 | 1927-12-20 | 0 | Details |
| US1625426A | Target for x-ray tubes | Expired / Lapsed | 1920-12-21 | 1927-04-19 | 0 | Details |
| US1624071A | Method of affixing coatings on incandescent-lamp filaments | Expired / Lapsed | 1921-07-28 | 1927-04-12 | 0 | Details |
| US1616010A | Destruction of the electrical conductivity of films | Expired / Lapsed | 1923-01-03 | 1927-02-01 | 0 | Details |
| US1591717A | Electron emission material and method of manufacture | Expired / Lapsed | 1922-09-28 | 1926-07-06 | 0 | Details |
| US1565565A | Electric gas lamp | Expired / Lapsed | 1922-02-02 | 1925-12-15 | 0 | Details |
| US1465998A | Detector tube | Expired / Lapsed | 1919-02-27 | 1923-08-28 | 0 | Details |
| US1461118A | Filament | Expired / Lapsed | 1917-12-19 | 1923-07-10 | 0 | Details |
| US1338818A | Optical apparatus and method of operating the same | Expired / Lapsed | 1919-10-23 | 1920-05-04 | 0 | Details |
| US1081618A | Process of preparing billets of refractory materials. | Expired / Lapsed | 1912-03-28 | 1913-12-16 | 0 | Details |