US2774044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunable coaxial line
Assignee: TDK Micronas GmbH
•
Filing: 1952-08-09
•
Granted: 1956-12-11
•
Expires: 1972-08-09
Abstract
No abstract record available.
Inventors
- 👤 John O Silvey
- 👤 Ortis C Booher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:49
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1904208A
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US2222902A
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US2567748A
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US2429811A
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US2579315A
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US2572232A
Cited
US2659817A
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US2641708A
Cited
US2686903A
Cited
US2714192A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |