US2883629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrite microwave devices for use at high signal energy levels
Assignee: AT&T Inc
•
Filing: 1955-12-19
•
Granted: 1959-04-21
•
Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Suhl Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:06
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2644930A
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US2791561A
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US2724091A
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US2671884A
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BE512391A
Cited
US2740834A
Cited
US2777896A
Cited
US2825761A
Cited
US2783207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |