Patent US2914661A successfully refreshed from Google Patents.
US2914661A
Expired / Lapsed
US
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Luminaire
Assignee: Westinghouse Electric Corp
•
Filing: 1954-05-28
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Granted: 1959-11-24
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Expires: 1974-05-28
Abstract
No abstract record available.
Inventors
- 👤 Frederic C Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:18
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US909247A
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FR467448A
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US1263783A
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US1297211A
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US1499432A
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US1563186A
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US1782196A
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US2130803A
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US2173172A
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US2280505A
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US2304945A
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US2626120A
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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) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |