Holophane Corp
HolophaneActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2665610A | Light directing glass block | Expired / Lapsed | 1949-11-10 | 1954-01-12 | 0 | Details |
| US2596634A | Direct lighting fixture | Expired / Lapsed | 1951-01-25 | 1952-05-13 | 0 | Details |
| US2447922A | Explosion-proof lighting equipment | Expired / Lapsed | 1944-07-12 | 1948-08-24 | 0 | Details |
| US2242872A | Luminaire | Expired / Lapsed | 1939-07-08 | 1941-05-20 | 0 | Details |
| US2179863A | Light directing brick and walls and buildings utilizing the… | Expired / Lapsed | 1933-08-25 | 1939-11-14 | 0 | Details |
| US2151801A | Vaporproof luminaire | Expired / Lapsed | 1936-12-17 | 1939-03-28 | 0 | Details |