US2639368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recessed lighting fixture with drop hinged cover
Assignee: Individual
•
Filing: 1949-05-12
•
Granted: 1953-05-19
•
Expires: 1969-05-12
Abstract
No abstract record available.
Inventors
- 👤 Pryne Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:45
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/02; F21V; F21V17/00; F21V17/10; F21V17/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1478473A
Cited
US1931343A
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US2120449A
Cited
US2334484A
Cited
US2227655A
Cited
US2300504A
Cited
US2330935A
Cited
US2434108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |