Patent US2463372A successfully refreshed from Google Patents.
US2463372A
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Cathode structure for magnetrons
Assignee: Individual
•
Filing: 1945-10-03
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Granted: 1949-03-01
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Expires: 1965-10-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Peter W Forsbergh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:49
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/04; H01J23/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2121360A
Cited
US2430309A
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US2400770A
Cited
US2372037A
Cited
US2406276A
Cited
US2416899A
Cited
US2414581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |