US2444080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device of the magnetron type
Assignee: Raytheon Co
•
Filing: 1944-10-27
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Granted: 1948-06-29
•
Expires: 1964-10-27
Abstract
No abstract record available.
Inventors
- 👤 Louis A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:29
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/18; H01J23/20; H01J23/213; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183215A
Cited
GB509102A
Cited
US2242249A
Cited
US2251085A
Cited
US2311658A
Cited
US2306282A
Cited
US2408237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |