US2441824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflector lamp
Assignee: Westinghouse Electric Corp
•
Filing: 1943-10-16
•
Granted: 1948-05-18
•
Expires: 1963-10-16
Abstract
No abstract record available.
Inventors
- 👤 John H Kurlander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:12
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1051542A
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US1213933A
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US1240583A
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FR496683A
Cited
FR595666A
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FR643887A
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US1981329A
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FR766557A
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US1998187A
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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) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |