US2422601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra high frequency coupling circuit
Assignee: Westinghouse Electric Corp
•
Filing: 1943-05-20
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Granted: 1947-06-17
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Expires: 1963-05-20
Abstract
No abstract record available.
Inventors
- 👤 David R Tashjian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:42
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/2133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2045904A
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US2281274A
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US2177272A
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US2189549A
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US2311520A
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US2312783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |