Patent US2742838A successfully refreshed from Google Patents.
US2742838A
Expired / Lapsed
US
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Apparatus for producing photocopy prints
Assignee: GEN PHOTO Manufacturing CO Inc
•
Filing: 1952-02-16
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Granted: 1956-04-24
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Expires: 1972-02-16
Abstract
No abstract record available.
Inventors
- 👤 John C Paulas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:43
CPC Classifications
G; G03; G03D; G03D9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1005430A
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US1366748A
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US2342394A
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FR879995A
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US2605684A
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US2520641A
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CH269199A
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GB672844A
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US2657618A
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US2664801A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |