US2632090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency cavity heater
Assignee: General Electric Co
•
Filing: 1948-04-21
•
Granted: 1953-03-17
•
Expires: 1968-04-21
Abstract
No abstract record available.
Inventors
- 👤 Henry E Revercomb
- 👤 Philip W Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6408; H05B6/6411
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1972050A
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US2263681A
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US2407690A
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US2438912A
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US2438914A
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US2427094A
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US2442451A
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US2497670A
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US2495170A
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US2495435A
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US2500676A
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US2467230A
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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) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |