US2936380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light valve logic circuits
Assignee: AT&T Inc
•
Filing: 1955-12-07
•
Granted: 1960-05-10
•
Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 John R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:35
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/01; G02F1/03; G02F1/05; G02F1/0516; G02F3/00; G06; G06E; G06E1/00; G06E1/02; G06E1/04; H; H03; H03K; H03K19/00; H03K19/02; H03K19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |