Patent US2849684A successfully refreshed from Google Patents.
US2849684A
Expired / Lapsed
US
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Non-reciprocal wave transmission
Assignee: AT&T Inc
•
Filing: 1953-07-31
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Granted: 1958-08-26
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Expires: 1973-07-31
Abstract
No abstract record available.
Inventors
- 👤 Stewart E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:10
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2632809A
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US2617880A
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US2644930A
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US2588832A
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US2745069A
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US2728050A
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US2679631A
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US2748350A
Cited
US2746018A
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US2773254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |