Patent US2907259A successfully refreshed from Google Patents.
US2907259A
Expired / Lapsed
US
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Combined exposing and developing apparatus for photoprints
Assignee: Keuffel and Esser Co
•
Filing: 1956-03-26
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Granted: 1959-10-06
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Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Horn Josef
- 👤 Jons Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
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)
US2735346A
Cited
US2317655A
Cited
US2641980A
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US2574215A
Cited
US2457753A
Cited
US2559159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |