US2757234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television shutter
Assignee: General Precision Laboratory Inc
•
Filing: 1950-03-29
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Granted: 1956-07-31
•
Expires: 1970-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jean A Duvoisin
- 👤 Arthur F Hayek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:41
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/36; H04N3/40; H04N3/405
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1786812A
Cited
US2022505A
Cited
US1957101A
Cited
US2122974A
Cited
US2202795A
Cited
US2303960A
Cited
GB555773A
Cited
US2483149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |