US2688692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video detector circuit for television
Assignee: Hartford National Bank and Trust Co
•
Filing: 1950-12-22
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Granted: 1954-09-07
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Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Glaisher Edward James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/4446; H03; H03D; H03D1/00; H03D1/08; H03D1/10; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/12; H04N5/455
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |