Patent US2673485A successfully refreshed from Google Patents.
Patent US2902914A successfully refreshed from Google Patents.
US2902914A
Expired / Lapsed
US
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Apparatus for treating photographic sheets
Assignee: Pako Corp
•
Filing: 1952-09-12
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Granted: 1959-09-08
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Expires: 1972-09-12
Abstract
No abstract record available.
Inventors
- 👤 Glen M Dye
- 👤 Sardeson Robert
- 👤 Eugene C Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:22
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/08; G03D3/00; G03D3/02; G03D3/06
Claims Analysis
Total Claims: 0
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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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |