Patent US3553733A successfully refreshed from Google Patents.
US3553733A
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Transverse electromagnetic devices for ferrite loaded planar circuits
Assignee: Westinghouse Electric Corp
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Filing: 1969-02-26
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Granted: 1971-01-05
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Expires: 1989-02-26
Abstract
Abstract DESCRIBED IS AN INTERGITITAL WAVE CIRCUIT DEPOSITED ON A FERRITE FILM AND HAVING A DIRECT CURRENT MAGNETIC FIELD APPLIED IN THE PLANE OF THE INTERDIGITAL CIRCUIT TO PROVIDE A MICROWAVE DEVICE EMPLOYING GYROMAGNETIC MEDIA FOR PHASE SHIFT, FREQUENCY TRANSLATION, CIRCULATION AND THE LIKE.
Inventors
- 👤 Daniel C Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:23
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |