US2417789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron anode structure
Assignee: Raytheon Co
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Filing: 1941-12-01
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Granted: 1947-03-18
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Expires: 1961-12-01
Abstract
No abstract record available.
Inventors
- 👤 Percy L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:06
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)
US2084867A
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US2217745A
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GB445084A
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US2063342A
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US2158114A
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US2163157A
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CH215600A
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US2270777A
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US2348986A
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US2408235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |