US3420151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electrophotographic printing
Assignee: Fairchild Semiconductor Corp
•
Filing: 1965-11-16
•
Granted: 1969-01-07
•
Expires: 1985-11-16
Abstract
No abstract record available.
Inventors
- 👤 Samuel W Levine
- 👤 John S Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:52
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2041153A
Cited
US3102045A
Cited
US3109355A
Cited
US3207050A
Cited
US3155022A
Cited
US3313223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |