Patent US3511649A successfully refreshed from Google Patents.
US3511649A
Expired / Lapsed
US
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Process of reducing fatigue in photoconductive glasses
Assignee: Xerox Corp
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Filing: 1966-05-02
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Granted: 1970-05-12
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Evan J Felty
- 👤 James W Sparks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:46
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08207; G03G13/00; G03G13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2863767A
Cited
US2844493A
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US2863768A
Cited
US2803542A
Cited
US2919119A
Cited
US2901349A
Cited
US3188208A
Cited
US3355289A
Cited
US3312548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |