US2654828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp with removable reflector unit
Assignee: Individual
•
Filing: 1951-11-19
•
Granted: 1953-10-06
•
Expires: 1971-11-19
Abstract
No abstract record available.
Inventors
- 👤 Albert F Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:00
CPC Classifications
F; F21; F21V; F21V17/00; F21L; F21L14/00; F21V27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319473A
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US1006598A
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US1073013A
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US1390939A
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US1656648A
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US1978644A
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US2013733A
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US2424719A
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US2574216A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |