Patent US2492133A successfully refreshed from Google Patents.
US2492133A
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US
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Fluid treatment apparatus for continuous films
Assignee: Individual
•
Filing: 1946-04-17
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Granted: 1949-12-27
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Expires: 1966-04-17
Abstract
No abstract record available.
Inventors
- 👤 Edward S Cobb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:59
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE282246C
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US44648A
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US1254300A
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US1682943A
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US1819848A
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US1921404A
Cited
DE687925C
Cited
DE693388C
Cited
GB541889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |