US2710945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mode suppression in resonant cavities
Assignee: AT&T Inc
•
Filing: 1947-09-26
•
Granted: 1955-06-14
•
Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 William A Edson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:40
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2151118A
Cited
US2197122A
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US2253589A
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US2439388A
Cited
US2415962A
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US2465719A
Cited
US2423396A
Cited
US2484822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |