US2927993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: Individual
•
Filing: 1954-12-21
•
Granted: 1960-03-08
•
Expires: 1974-12-21
Abstract
No abstract record available.
Inventors
- 👤 Willis L Lipscomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:37
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/0008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1941469A
Cited
US2121430A
Cited
US2138635A
Cited
US2214600A
Cited
US2176236A
Cited
US2215234A
Cited
US2418131A
Cited
US2675466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |