US2428612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron
Assignee: General Electric Co
•
Filing: 1942-05-09
•
Granted: 1947-10-07
•
Expires: 1962-05-09
Abstract
No abstract record available.
Inventors
- 👤 John P Blewett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:26
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2084867A
Cited
US2073599A
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US2250698A
Cited
US2187149A
Cited
US2270777A
Cited
US2289220A
Cited
US2247077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |