US2476616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-power miniature fluorescent and/or glow lamp
Assignee: Westinghouse Electric Corp
•
Filing: 1943-11-08
•
Granted: 1949-07-19
•
Expires: 1963-11-08
Abstract
No abstract record available.
Inventors
- 👤 Morehead Chalmers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:31
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/38; H01J61/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1965588A
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US2020723A
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US2194288A
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US2219923A
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US2297940A
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Cited
GB555327A
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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) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |