Patent US2446826A successfully refreshed from Google Patents.
US2446826A
Expired / Lapsed
US
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Magnetron
Assignee: General Electric Co
•
Filing: 1943-04-14
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Granted: 1948-08-10
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Expires: 1963-04-14
Abstract
No abstract record available.
Inventors
- 👤 Elmer D Mcarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/54; H01J25/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128231A
Cited
US2084867A
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US2128237A
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US2154758A
Cited
GB509102A
Cited
US2295315A
Cited
US2284751A
Cited
US2247077A
Cited
US2424886A
Cited
US2403303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |