US2632854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant cavity drive
Assignee: Westinghouse Electric Corp
•
Filing: 1947-12-18
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Granted: 1953-03-24
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Expires: 1967-12-18
Abstract
No abstract record available.
Inventors
- 👤 Altar William
- 👤 John W Coltman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:01
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/18; H01J23/20; H01J23/207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2403726A
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US2466136A
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US2419903A
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US2408055A
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US2473448A
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US2422190A
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US2491971A
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US2501052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |