US3511650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic imaging process
Assignee: 3M Co
•
Filing: 1967-06-09
•
Granted: 1970-05-12
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Expires: 1987-06-09
Abstract
No abstract record available.
Inventors
- 👤 Benjamin L Shely
- 👤 Joseph W Shepard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:55
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/06; B; B41; B41M; B41M5/00; B41M5/025; B41M5/0256; G03G13/00; G03G13/01; G03G13/14; G03G13/22; G03G13/26; G03G17/00; G03G17/02; G03G7/00
Claims Analysis
Total Claims: 0
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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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |