US2848931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film developing apparatus
Assignee: Individual
•
Filing: 1955-07-26
•
Granted: 1958-08-26
•
Expires: 1975-07-26
Abstract
No abstract record available.
Inventors
- 👤 Robert A Troidl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:44
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/06; G03D5/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1308709A
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US1816360A
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US1804793A
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US1999965A
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CH290918A
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US2419853A
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US2761365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |