US2858381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interchangeable fixture for electric lights
Assignee: COMET LAMP Co
•
Filing: 1956-03-09
•
Granted: 1958-10-28
•
Expires: 1976-03-09
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Leon
- 👤 Goldberg Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:26
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/34; F21V23/00; F21V23/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE383466C
Cited
US807336A
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US1206826A
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FR564054A
Cited
US2114664A
Cited
US2177718A
Cited
GB530608A
Cited
CH219063A
Cited
US2407737A
Cited
US2698455A
Cited
US2717955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |