US2595646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television test signal generator
Assignee: AT&T Inc
•
Filing: 1947-06-02
•
Granted: 1952-05-06
•
Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Stephen Doba
- 👤 Johannes J Jansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:25
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/04; H04N17/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2203750A
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US2226706A
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US2166688A
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US2183966A
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US2231829A
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US2310328A
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GB520349A
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US2284219A
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US2416290A
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US2443603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |