US3457070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotography
Assignee: Matsuragawa Electric Co Ltd
•
Filing: 1965-07-13
•
Granted: 1969-07-22
•
Expires: 1985-07-13
Abstract
No abstract record available.
Inventors
- 👤 Yoshiyuki Watanabe
- 👤 Koichi Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:11
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; G03G13/00; G03G13/056; G03G5/02; G03G5/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2901348A
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US2741959A
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US2853383A
Cited
US2912592A
Cited
US3196011A
Cited
US3268331A
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US3308233A
Cited
US3347669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |