US2557307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film developing apparatus
Assignee: NEWMAN SCHMIDT STUDIOS
•
Filing: 1949-03-11
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Granted: 1951-06-19
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Irving J Newman
- 👤 Herman W Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:03
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D3/04; G03D13/00; G03D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE79257C
Cited
US2281094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |