US2492764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp holder for circular fluorescent lamps
Assignee: General Electric Co
•
Filing: 1946-01-16
•
Granted: 1949-12-27
•
Expires: 1966-01-16
Abstract
No abstract record available.
Inventors
- 👤 John M Pistey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:40
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/0075; F21Y; F21Y2103/00; F21Y2103/30; F21Y2103/33
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1084362A
Cited
US1211847A
Cited
US2240659A
Cited
US2350462A
Cited
US2403968A
Cited
US2419965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |