US2488141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film processor having means for retaining a film loop at constant length in a u-shaped conduit
Assignee: Individual
•
Filing: 1945-03-07
•
Granted: 1949-11-15
•
Expires: 1965-03-07
Abstract
No abstract record available.
Inventors
- 👤 Verneur E Pratt
- 👤 George F Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:48
CPC Classifications
G; G03; G03D; G03D13/00; G03D3/00; G03D3/02; G03D3/06; G03D3/08; G03D3/13; G03D3/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR844158A
Cited
US757323A
Cited
US1570809A
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DE529933C
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DE594938C
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US1991249A
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US2043853A
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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) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |