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US2492996A
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Tunable high-frequency cavity resonator
Assignee: Unisys Corp
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Filing: 1945-08-25
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Granted: 1950-01-03
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Expires: 1965-08-25
Abstract
No abstract record available.
Inventors
- 👤 Robert O Haxby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:49
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/10; H01J25/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21361E
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USRE22982E
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US2280824A
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US2304186A
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US2403782A
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US2356414A
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US2391016A
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US2408234A
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US2408238A
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US2452056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |