US3564560A
Expired / Lapsed
US
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Recording in an electro-optic medium
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1968-06-27
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Granted: 1971-02-16
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Expires: 1988-06-27
Abstract
Abstract A METHOD AND APPARATUS ARE DISCLOSED FOR STORING INFORMATION SUPPLIED IN THE FORM OF A RADIATION PATTERN BY ESTABLISHING AN ELECTRO-STATIC CHARGE DISTRIBUTION ACROSS AN ELECTRO-OPTIC MEDIUM AND A PHOTOCONDUCTOR MEDIUM TO CREATE, ACROSS THE ELECTRO-OPTIC MEDIUM, AN ELECTRIC FIELD WHICH VARIES AS A FUNCTION OF RADIATION APPLIED TO THE PHOTOCONDUCTOR MEDIUM, AND RESULTS IN CORRESPONDING VARIATIONS IN A ELECTRO-OPTIC CHARACTERISTIC OF THE ELECTROOPTIC MEDIUM.
Inventors
- 👤 Ralph Edward Aldrich
- 👤 Paul John Caruso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:53
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/14; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0338; G03; G03G; G03G17/00; G03G17/02; G11; G11C; G11C13/00; G11C13/04; G11C13/047
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |