US2948870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave mode suppressors
Assignee: AT&T Inc
•
Filing: 1956-03-13
•
Granted: 1960-08-09
•
Expires: 1976-03-13
Abstract
No abstract record available.
Inventors
- 👤 Albert M Clogston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/16; H01P1/162
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2644930A
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US2770783A
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US2760168A
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US2770782A
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US2802184A
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US2849686A
Cited
US2817813A
Cited
US2755447A
Cited
US2806972A
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US2810882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |