US2911330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic brush cleaning
Assignee: Xerox Corp
•
Filing: 1958-04-11
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Granted: 1959-11-03
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Expires: 1978-04-11
Abstract
No abstract record available.
Inventors
- 👤 Harold E Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:54
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0047; G03G2221/00; G03G2221/0005; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
THE METHOD OF REMOVING ELECTROSCOPIC POWDER FROM A XEROGRAPHIC PLATE WHICH CONSISTS IN BRUSHING THE PLATE WITH GRANULAR FERROMAGNETIC PARTICLES ORIENTED IN BRISTLE FORMATION WITH RESPECT TO MAGNETIC FIELD PRODUCING MEANS.
Claim 2
Independent Claim
31 words
THE METHOD OF REMOVING ELECTROSCOPIC POWDER FROM A XEROGRAPHIC PLATE WHICH CONSISTS IN BRUSHING THE PLATE WITH GRANULAR FERROMAGNETIC PARTICLES ORIENTED IN BRISTLE FORMATION WITH RESPECT TO MAGNETIC FIELD PRODUCING MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |