Patent US3045587A successfully refreshed from Google Patents.
US3045587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic printing apparatus for forming multiple copies
Assignee: Xerox Corp
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Filing: 1957-06-06
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Granted: 1962-07-24
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Schwertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:00
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/14; G03G15/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2703780A
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US2811101A
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US2919170A
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US2756676A
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GB755486A
Cited
US2803177A
Cited
US2752271A
Cited
US2951443A
Cited
US2919967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |