US3527651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for developing electrostatic images
Assignee: AB Dick Co
•
Filing: 1966-10-20
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Granted: 1970-09-08
•
Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 Loren E Shelffo
- 👤 Norman B Sackrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/043; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0848; G03G15/0849; G03G15/0851; G03G15/0887; G03G15/0891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1717193A
Cited
US2956487A
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US3094049A
Cited
US3233781A
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US3376853A
Cited
US3376854A
Cited
US3387586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |