Patent US1307927A successfully refreshed from Google Patents.
Patent US3615128A successfully refreshed from Google Patents.
US3615128A
Expired / Lapsed
US
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Apparatus for electrostatic printing
Assignee: Xerox Corp
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Filing: 1968-07-11
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Granted: 1971-10-26
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Expires: 1988-07-11
Abstract
Abstract A METHOD AND APPARATUS FOR PRINTING ELECTROSTICALLY INCLUDING CHARGING A PHOTOSENSITIVE PLATE AND EXPOSING IT TO AN OPTICAL PATTERN TO FORM A LATENT IMAGE, PLACING THE PLATE ON A CONVEYOR, DEVELOPING THE LATENT IMAGE AND AFFIXING THE DEVELOPED IMAGE TO THE PLATE TO FORM A XEROPRINTING MATER, AND CHARGING THE MASTER, ILLUMINATING THE MASTER, DEVELOPING THE MASTER AND TRANSFERRING FROM THE MASTER TO A COPY SHEET THE UNFUSED TONER TO FORM A COPY OF THE MASTER ON THE COPY SHEET.
Inventors
- 👤 Gopal C Bhagat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:15
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |