US2590310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective squelch circuit
Assignee: RCA Corp
•
Filing: 1947-08-20
•
Granted: 1952-03-25
•
Expires: 1967-08-20
Abstract
No abstract record available.
Inventors
- 👤 Jr George D Hanchett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:50
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/025; H04W88/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1396745A
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US1804526A
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US2135557A
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US2038683A
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US2028859A
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US2151740A
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US2139489A
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US2265868A
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US2368778A
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US2392672A
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US2382097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |