US2762017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrahigh frequency filter
Assignee: TDK Micronas GmbH
•
Filing: 1951-08-07
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Granted: 1956-09-04
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Expires: 1971-08-07
Abstract
No abstract record available.
Inventors
- 👤 Ervin M Bradburd
- 👤 Robert S Alter
- 👤 Jr Thomas M Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:17
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; H01P1/2133; H01P1/201; H01P1/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2506132A
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US2661424A
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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) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |