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US3471695A
Expired / Lapsed
US
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Corona charging apparatus with means to urge a flow of aeriform fluid across the corona wires
Assignee: Xerox Corp
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Filing: 1967-05-22
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Granted: 1969-10-07
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Hudson
- 👤 John E Cranch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:42
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/04; G; G03; G03G; G03G15/00; G03G15/02; G03G15/0258; G03G15/0291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3324291A
Cited
US3382360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |