US2692374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp
Assignee: General Electric Co
•
Filing: 1951-09-20
•
Granted: 1954-10-19
•
Expires: 1971-09-20
Abstract
No abstract record available.
Inventors
- 👤 Paul A Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/002; H; H01; H01J; H01J5/00; H01J5/50; H01J5/54; H01J5/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2079801A
Cited
US2079274A
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US2316072A
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US2299733A
Cited
US2506620A
Cited
US2587239A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |