US2652480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined illuminator and reflector
Assignee: Individual
•
Filing: 1948-06-17
•
Granted: 1953-09-15
•
Expires: 1968-06-17
Abstract
No abstract record available.
Inventors
- 👤 Duval Philippe Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:45
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/0091; F21W; F21W2131/00; F21W2131/20; F21W2131/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US299277A
Cited
US1138552A
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US1286287A
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US1533605A
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US1667545A
Cited
FR652345A
Cited
US1844050A
Cited
US1850219A
Cited
FR720138A
Cited
US2180151A
Cited
US2469412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |