Patent US2652758A successfully refreshed from Google Patents.
US2652758A
Expired / Lapsed
US
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Agitating device for photographic, liquid developer
Assignee: Pako Corp
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Filing: 1949-11-22
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Granted: 1953-09-22
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Expires: 1969-11-22
Abstract
No abstract record available.
Inventors
- 👤 Sardeson Robert
- 👤 John F Braden
- 👤 Conrad E Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:04
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D3/04; B; B01; B01F; B01F31/00; B01F31/44; B01F31/441; G03D13/00; G03D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |