US3398259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrostatic copying machine
Assignee: AB Dick Co
•
Filing: 1964-08-12
•
Granted: 1968-08-20
•
Expires: 1984-08-12
Abstract
No abstract record available.
Inventors
- 👤 John L Tregay
- 👤 Kristian L Helland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:35
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2007; G03G15/04; G03G15/04036; G03G15/06; G03G15/08; G03G15/0822; G03G15/0877; G03G15/22; G03G15/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2357889A
Cited
US2688281A
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US3315777A
Cited
US3053962A
Cited
US3079483A
Cited
US3187162A
Cited
US3219799A
Cited
US3181420A
Cited
US3298495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |