US3624858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus
Assignee: Xerox Corp
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Filing: 1969-11-05
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Granted: 1971-12-07
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Expires: 1989-11-05
Abstract
Abstract APPARATUS FOR CLEANING THE SURFACE ON WHICH ELECTROSTATIC LATENT IMAGES ARE FORMED AND DEVELOP. A WEB OF FIBROUS MATERIAL IS ADVANCED IN CONSTANT LINEAR INCREMENTS INTO RUBBING CONTACT WITH THE SURFACE TO BE CLEANED. A COMBINATION OF LOOPS IN THE WEB ENABLES CLEANING TWO SURFACES SIMULTANEOUSLY UTILIZING BOTH SIDES OF THE WEB.
Inventors
- 👤 John A Dimond
- 👤 Armistead Wharton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:46
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0041
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |