US2621571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-controlled film processing apparatus
Assignee: Individual
•
Filing: 1948-10-01
•
Granted: 1952-12-16
•
Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 Katzen Cyrus
- 👤 Thomas R Games
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:26
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D3/06; G03D13/00; G03D13/003; G03D13/006; G03D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US665937A
Cited
US1254300A
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US1772834A
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US1867190A
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US1943389A
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FR711776A
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US1958791A
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US1991249A
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US2162016A
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US2161604A
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US2226438A
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US2194345A
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US2327733A
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US2297906A
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US2400675A
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US2410873A
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US2354225A
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US2440314A
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US2446668A
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US2453900A
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US2491620A
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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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |