US2924748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting unit
Assignee: General Electric Co
•
Filing: 1957-04-29
•
Granted: 1960-02-09
•
Expires: 1977-04-29
Abstract
No abstract record available.
Inventors
- 👤 Frank E Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:13
CPC Classifications
F; F21; F21V; F21V23/00; F21S; F21S8/00; F21S8/003; F21W; F21W2111/00; F21W2111/04; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US316708A
Cited
US1024495A
Cited
US1578719A
Cited
US1809673A
Cited
US2562063A
Cited
US2809329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |