US2624834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity frequency shift reception
Assignee: RCA Corp
•
Filing: 1949-09-29
•
Granted: 1953-01-06
•
Expires: 1969-09-29
Abstract
No abstract record available.
Inventors
- 👤 John B Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:41
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02; H04L1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2249425A
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US2253867A
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US2302951A
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US2306687A
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US2392693A
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US2491810A
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US2494309A
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US2495826A
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US2555557A
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US2543256A
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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) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |