Patent US3561846A successfully refreshed from Google Patents.
US3561846A
Expired / Lapsed
US
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Radiation sensitive scanner for documents
Assignee: Xerox Corp
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Filing: 1969-01-31
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Granted: 1971-02-09
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Expires: 1989-01-31
Abstract
Abstract APPARATUS FOR SCANNING DOCUMENTS IN FASCIMILE MACHINES AND THE LIKE HAVING A LIGHT SOURCE, ELLIPTICAL REFLECTOR, MEANS TO ACCUMULATE AND FOCUS REFLECTED LIGHT CONTAINED WITHIN THE REFLECTOR AND MEANS FOR GENERATING AN ELECTRICAL SIGNAL IN RESPONSE TO THE REFLECTED LIGHT.
Inventors
- 👤 David O Kingsland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:36
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/029; G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01N21/474
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |