US2740912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television pick-up tube
Assignee: AT&T Inc
•
Filing: 1950-09-19
•
Granted: 1956-04-03
•
Expires: 1970-09-19
Abstract
No abstract record available.
Inventors
- 👤 Robert E Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:02
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/30; H04N3/34; H01; H01J; H01J31/00; H01J31/08; H01J31/26; H04N7/00; H04N7/12; H04N7/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563482A
Cited
US2138928A
Cited
US2213179A
Cited
US2289500A
Cited
US2307728A
Cited
US2462896A
Cited
US2506742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |