Patent US2502059A successfully refreshed from Google Patents.
US2495826A
Expired / Lapsed
US
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Locking and control circuit in a diversity telegraphy receiver
Assignee: RCA Corp
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Filing: 1946-09-18
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Granted: 1950-01-31
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Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Robert E Schock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2154492A
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US2253832A
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US2405237A
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US2324314A
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US2348016A
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US2364952A
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US2366357A
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US2411598A
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US2375126A
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US2433667A
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US2384456A
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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) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |