US2503931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp holder for circular lamps
Assignee: General Electric Co
•
Filing: 1945-10-31
•
Granted: 1950-04-11
•
Expires: 1965-10-31
Abstract
No abstract record available.
Inventors
- 👤 William R Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:57
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/05; H01R33/06; H01R33/08; H01R33/0809
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1954375A
Cited
US2309676A
Cited
US2254706A
Cited
US2298961A
Cited
US2350462A
Cited
US2400381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |