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US2634369A
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Detector for frequency modulation receivers
Assignee: Standard Coil Products Co Inc
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Filing: 1947-06-26
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Granted: 1953-04-07
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Expires: 1967-06-26
Abstract
No abstract record available.
Inventors
- 👤 Glen E Swanson
- 👤 Edwin P Thias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:45
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1867567A
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US2282105A
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US2351212A
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US2364761A
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US2435414A
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US2412482A
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US2413977A
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US2420268A
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US2495023A
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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) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |