US2492313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron
Assignee: Westinghouse Electric Corp
•
Filing: 1943-11-02
•
Granted: 1949-12-27
•
Expires: 1963-11-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Okress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:04
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)
US1650921A
Cited
GB309241A
Cited
US2163157A
Cited
US2244752A
Cited
US2216169A
Cited
US2417789A
Cited
US2398162A
Cited
US2400770A
Cited
US2408927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |