Patent US3427157A successfully refreshed from Google Patents.
US3427157A
Expired / Lapsed
US
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Xerographic process utilizing a photoconductive alloy of thallium in selenium
Assignee: Xerox Corp
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Filing: 1964-12-28
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Granted: 1969-02-11
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Peter J Cerlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:16
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08207; Y; Y10; Y10S; Y10S430/00; Y10S430/167; Y10S430/168
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2887411A
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US2970906A
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US2968725A
Cited
US3077386A
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US2962376A
Cited
US3312548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |