US2435804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cavity resonator magnetron device
Assignee: RCA Corp
•
Filing: 1944-01-01
•
Granted: 1948-02-10
•
Expires: 1964-01-01
Abstract
No abstract record available.
Inventors
- 👤 John M Spooner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:52
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128233A
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US2223082A
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US2153728A
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US2283935A
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US2263248A
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US2375223A
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US2300052A
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US2372193A
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US2247077A
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US2329777A
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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) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |