US2588696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film developing apparatus
Assignee: Individual
•
Filing: 1947-12-08
•
Granted: 1952-03-11
•
Expires: 1967-12-08
Abstract
No abstract record available.
Inventors
- 👤 Alpha N Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:49
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/006; G03D13/02; G03D13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190419164A
Cited
US897251A
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US1245848A
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US1237657A
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FR527944A
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US1429270A
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US1845800A
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US2112605A
Cited
US2344998A
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US2325120A
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US2341666A
Cited
US2349028A
Cited
US2452389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |