Patent US2808504A successfully refreshed from Google Patents.
US2808504A
Expired / Lapsed
US
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Single sideband transmitting and receiving unit
Assignee: RCA Corp
•
Filing: 1955-03-22
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Granted: 1957-10-01
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Expires: 1975-03-22
Abstract
No abstract record available.
Inventors
- 👤 Karl L Neumann
- 👤 Niles L Barlow
- 👤 Charles E Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:29
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2272068A
Cited
US2408826A
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US2529443A
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US2499279A
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US2608648A
Cited
US2708237A
Cited
US2666133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |