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Patent US3533692A successfully refreshed from Google Patents.
US3533692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrostatic copying apparatus
Assignee: AB Dick Co
•
Filing: 1968-02-05
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Granted: 1970-10-13
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Expires: 1988-02-05
Abstract
No abstract record available.
Inventors
- 👤 Robert G Blanchette
- 👤 Loren E Shelffo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:09
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/75; G03G15/754; G03G5/00; G03G5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3045644A
Cited
US3152012A
Cited
US3288602A
Cited
US3337339A
Cited
US3185051A
Cited
US3190199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |