US2581607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multisegment single cavity magnetron
Assignee: RCA Corp
•
Filing: 1946-09-07
•
Granted: 1952-01-08
•
Expires: 1966-09-07
Abstract
No abstract record available.
Inventors
- 👤 Carl I Shulman
- 👤 George R Kilgore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:21
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/54; H01J25/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1114697A
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US1523776A
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US2071516A
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US2144222A
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US2250698A
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US2424886A
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US2446826A
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US2508280A
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US2454337A
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US2428888A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |