Patent US2647270A successfully refreshed from Google Patents.
US2996969A
Expired / Lapsed
US
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Photocopying machine
Assignee: ARTHUR FROHMAN
•
Filing: 1959-02-17
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Granted: 1961-08-22
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Expires: 1979-02-17
Abstract
No abstract record available.
Inventors
- 👤 Kaufman Aaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:48
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/30; G03B27/303
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732778A
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US1740293A
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US1951113A
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US2401203A
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US2559159A
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US2616344A
Cited
US2743653A
Cited
US2783697A
Cited
US2875677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |