US2861543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for development of electrostatic image
Assignee: Xerox Corp
•
Filing: 1954-06-14
•
Granted: 1958-11-25
•
Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Crumrine
- 👤 Joseph F Rosenthal
- 👤 William E Bixby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:32
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2093995A
Cited
US1333079A
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US2470580A
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US2499466A
Cited
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Cited
US2614528A
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GB698994A
Cited
US2711481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |