Patent US3101458A successfully refreshed from Google Patents.
US3101458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrite phase shifter having casing-supported thin-foil waveguide, with magnetising pole pieces penetrating the casing
Assignee: Texas Instruments Inc
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Filing: 1958-08-04
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Granted: 1963-08-20
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Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Jr John Chandler
- 👤 Lester C Holly
- 👤 Jr John Lee Vilbig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:21
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/397
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
MICROWAVE SWITCHING APPARATUS COMPRISING: (A) A SECTION OF WAVEGUIDE COMPOSED OF THIN CONDUCTIVE FOIL MEANS SUPPORTED ON THE INTERIOR SURFACE OF A HOLLOW CASING OF NONCONDUCTIVE AND NONMAGNETIC MATERIAL, (A) THE CASING HAVING TRANSVERSELY-OPPOSED RELIEVED AREAS,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |