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US2919418A
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US
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Constant impedance coaxial phase shifter
Assignee: Martin Co
•
Filing: 1955-07-19
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Granted: 1959-12-29
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Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Reis
- 👤 Donald R Barthel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:17
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2567748A
Cited
US2542416A
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US2699501A
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US2511586A
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US2560685A
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US2688732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |