Patent US2691097A successfully refreshed from Google Patents.
US2691097A
Expired / Lapsed
US
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Squelch circuit
Assignee: RCA Corp
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Filing: 1951-05-16
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Granted: 1954-10-05
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Expires: 1971-05-16
Abstract
No abstract record available.
Inventors
- 👤 John B Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:12
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2123716A
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US2453988A
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US2420518A
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US2398793A
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US2409139A
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US2507735A
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US2513786A
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US2501883A
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US2533543A
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US2644035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |