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US3473940A
Expired / Lapsed
US
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Preparation of photoelectrophoretic imaging suspension
Assignee: Xerox Corp
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Filing: 1966-04-21
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Granted: 1969-10-21
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Expires: 1986-04-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:38
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB471829A
Cited
US2134897A
Cited
US2212629A
Cited
US2361059A
Cited
US3332631A
Cited
US3384566A
Cited
US3384565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |