US2861180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detector for vestigial sideband signals
Assignee: RCA Corp
•
Filing: 1955-05-02
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Granted: 1958-11-18
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Richard W Sonnenfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:43
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/455; H03; H03D; H03D1/00; H03D1/08; H03D1/10; H03D1/22; H03D1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB433863A
Cited
US2280187A
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US2519890A
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US2623169A
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US2605397A
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US2713606A
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US2718546A
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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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |