Patent US2619587A successfully refreshed from Google Patents.
US2619587A
Expired / Lapsed
US
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Diversity receiving system
Assignee: RCA Corp
•
Filing: 1949-07-23
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Granted: 1952-11-25
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Expires: 1969-07-23
Abstract
No abstract record available.
Inventors
- 👤 Bertram A Trevor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02; H04L1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2070418A
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US2249425A
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US2253867A
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US2389919A
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US2383126A
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US2384456A
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US2492780A
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US2488193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |