US2852622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal-to-noise squelch control circuit
Assignee: Collins Radio Co
•
Filing: 1955-01-13
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Granted: 1958-09-16
•
Expires: 1975-01-13
Abstract
No abstract record available.
Inventors
- 👤 Christian D Fedde
- 👤 James L Westcot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:58
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22; H03G3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1808915A
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US2098286A
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US2319306A
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US2694142A
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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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |