Patent US3522526A successfully refreshed from Google Patents.
US3522526A
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US
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Multiport radio frequency measuring and coupling circuits having matched input impedance at unknown port
Assignee: ALBERT E SANDERSON
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Filing: 1967-03-17
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Granted: 1970-08-04
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Expires: 1987-03-17
Abstract
No abstract record available.
Inventors
- 👤 Albert E Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:35
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213; G; G01; G01R; G01R27/00; G01R27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2416790A
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US2473328A
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US2547802A
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US2736864A
Cited
US3090003A
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US3271668A
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US3257614A
Cited
US3309608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |