Patent US3554628A successfully refreshed from Google Patents.
US3554628A
Expired / Lapsed
US
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Infrared optical system utilizing circular scanning
Assignee: Texas Instruments Inc
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Filing: 1966-05-03
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Granted: 1971-01-12
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Expires: 1986-05-03
Abstract
Abstract AN OPTICAL APPARATUS IS DISCLOSED FOR USE IN PRODUCING AVISUAL PICTURE OF THE INFRARED IMAGE OF A TERRAIN AREA, THE APPARATUS UTILIZING A CIRCULAR SCAN OF THE TERRAIN AREA IN THE IMAGE PLANE OF THE APPARATUS.
Inventors
- 👤 Howard V Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/02; H04N3/08; H04N3/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |