US3490843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic copier
Assignee: Wells Fargo Capital Finance LLC
•
Filing: 1964-06-30
•
Granted: 1970-01-20
•
Expires: 1984-06-30
Abstract
No abstract record available.
Inventors
- 👤 E Paul Charlap
- 👤 Fritz Baumgarten
- 👤 Lothar Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:04
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/28; G03G15/06; G03G15/08; G03G15/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2791949A
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US3005389A
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US3005388A
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US2986442A
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US3040704A
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US3059614A
Cited
US3088386A
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US3091169A
Cited
FR1324009A
Cited
US3181420A
Cited
US3272100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |