US2432827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High efficiency magnetron
Assignee: Raytheon Co
•
Filing: 1943-02-11
•
Granted: 1947-12-16
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Expires: 1963-02-11
Abstract
No abstract record available.
Inventors
- 👤 Percy L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:13
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/18; H01J23/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2005793A
Cited
GB445084A
Cited
US2154758A
Cited
US2250698A
Cited
CH215601A
Cited
US2247077A
Cited
US2422465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |