US2639403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strapped multicavity magnetron
Assignee: United States, WAR, Secretary of
•
Filing: 1945-02-27
•
Granted: 1953-05-19
•
Expires: 1965-02-27
Abstract
No abstract record available.
Inventors
- 👤 Prescott D Crout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:01
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)
US2084867A
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US2063342A
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US2154758A
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US2167201A
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US2163157A
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US2305781A
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US2348986A
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US2419172A
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US2542899A
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US2478534A
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US2414085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |