Patent US3606864A successfully refreshed from Google Patents.
US3606864A
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US
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Donor assembly
Assignee: Xerox Corp
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Filing: 1969-03-10
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Granted: 1971-09-21
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Expires: 1989-03-10
Abstract
Abstract AN ELECTROSCOPIC MARKING PARTICLE SUPPLY AND DONOR ASSEMBLY HAVING A CYLINDRICAL HOUSING WITH AN OPENING THEREIN TO MAKE ACCESSIBLE TO ANOTHER MEMBER A CRESCENTIC TUBULAR MEMBER ENCLOSING A SUPPLY OF DEVELOPER MATERIAL AND WHICH RECIPROCATES INSIDE THE HOUSING AND ABOUT THE AXIS THEREOF.
Inventors
- 👤 William D Perun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:08
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0877; G03G15/0881; G03G15/0886; G03G15/0865; G03G15/0867; G03G15/087; G03G15/0872
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |