Patent US2895114A successfully refreshed from Google Patents.
US2895114A
Expired / Lapsed
US
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Nonreciprocal circuit element
Assignee: AT&T Inc
•
Filing: 1955-11-03
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Granted: 1959-07-14
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Expires: 1975-11-03
Abstract
No abstract record available.
Inventors
- 👤 John H Rowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:16
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2441574A
Cited
USRE23950E
Cited
GB716257A
Cited
US2649574A
Cited
US2719274A
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US2760166A
Cited
US2764676A
Cited
FR1111860A
Cited
US2811641A
Cited
US2767379A
Cited
US2755447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |