US2748352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-reciprocal wave transmission networks
Assignee: AT&T Inc
•
Filing: 1951-12-27
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Granted: 1956-05-29
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Expires: 1971-12-27
Abstract
No abstract record available.
Inventors
- 👤 Stewart E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:21
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/393
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2525901A
Cited
US2438119A
Cited
US2425345A
Cited
US2441598A
Cited
US2606248A
Cited
US2619540A
Cited
US2644930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |