US2429291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetron
Assignee: Westinghouse Electric Corp
•
Filing: 1943-07-01
•
Granted: 1947-10-21
•
Expires: 1963-07-01
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Okress
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:19
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/50; H01J25/52; H01J25/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2115521A
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CH215600A
Cited
US2348986A
Cited
US2408234A
Cited
US2408237A
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US2406277A
Cited
US2410396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |