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Patent US2632146A successfully refreshed from Google Patents.
US2632146A
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Transistor frequency modulation
Assignee: AT&T Inc
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Filing: 1949-01-13
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Granted: 1953-03-17
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Expires: 1969-01-13
Abstract
No abstract record available.
Inventors
- 👤 Winston E Kock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:36
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/14; H03C3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2410076A
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US2407293A
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US2551348A
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US2548449A
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US2562792A
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US2456026A
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US2486776A
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US2476323A
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US2569347A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |