Patent US2691131A successfully refreshed from Google Patents.
US2691131A
Expired / Lapsed
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Testing apparatus for cathode-ray tubes and circuits
Assignee: VIDEO TELEVISION Inc
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Filing: 1952-01-31
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Granted: 1954-10-05
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Expires: 1972-01-31
Abstract
No abstract record available.
Inventors
- 👤 Kaplan Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:59
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2075415A
Cited
US2133610A
Cited
US2172953A
Cited
US2217925A
Cited
US2264066A
Cited
US2532759A
Cited
US2590116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |