US2473399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device of the magnetron type
Assignee: Raytheon Co
•
Filing: 1945-03-27
•
Granted: 1949-06-14
•
Expires: 1965-03-27
Abstract
No abstract record available.
Inventors
- 👤 Percy L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:05
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58; H01J25/587; H01J23/00; H01J23/16; H01J23/18; H01J23/22; H01J25/593
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2111263A
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US2167201A
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US2250698A
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GB522360A
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US2247077A
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US2444419A
Cited
US2422465A
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US2408903A
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US2429291A
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US2418469A
Cited
US2414085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |