Patent US3466441A successfully refreshed from Google Patents.
US3466441A
Expired / Lapsed
US
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Semiconductor infrared-to-visible light image converter
Assignee: AT&T Inc
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Filing: 1967-04-07
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Granted: 1969-09-09
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Expires: 1987-04-07
Abstract
No abstract record available.
Inventors
- 👤 Robert L Batdorf
- 👤 Charles A Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:55
CPC Classifications
G; G02; G02F; G02F1/00; H; H10; H10F; H10F55/00; H10F55/10; H10F55/17
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) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |