Patent US3558339A successfully refreshed from Google Patents.
US3558339A
Expired / Lapsed
US
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Method of and apparatus for stippling
Assignee: Xerox Corp
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Filing: 1968-05-20
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Granted: 1971-01-26
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Expires: 1988-05-20
Abstract
Abstract A METHOD OF STIPPLING A DEVELOPMENT BRUSH BY MAKING THE BRUSH CONE-SHAPED AND OSCILLATING IT IN A PLANE COINCIDENT WITH ITS GEOMETRIC AXIS TO CHANGE THE DEGREE OF INTERFERENCE BETWEEN THE BRUSH AND THE SURFACE BEING DEVELOPED.
Inventors
- 👤 John M Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:48
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0805
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |