US2525468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra high frequency tube
Assignee: Westinghouse Electric Corp
•
Filing: 1943-03-29
•
Granted: 1950-10-10
•
Expires: 1963-03-29
Abstract
No abstract record available.
Inventors
- 👤 Alpert Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:18
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128234A
Cited
GB190804479A
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US2217421A
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US2281274A
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US2200023A
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US2216169A
Cited
US2372193A
Cited
US2341920A
Cited
US2404226A
Cited
US2403303A
Cited
US2419049A
Cited
US2467730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |