US2678385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity receiver
Assignee: RCA Corp
•
Filing: 1951-04-16
•
Granted: 1954-05-11
•
Expires: 1971-04-16
Abstract
No abstract record available.
Inventors
- 👤 John B Atwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:51
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02; H04L1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1868945A
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US1914103A
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US2042831A
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US2143178A
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US2256538A
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US2345933A
Cited
US2408039A
Cited
US2332253A
Cited
US2424971A
Cited
US2452675A
Cited
US2564682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |