Patent US2753779A successfully refreshed from Google Patents.
US2753779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic implement for development of objects carrying sensitive layers
Assignee: Individual
•
Filing: 1952-10-31
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Granted: 1956-07-10
•
Expires: 1972-10-31
Abstract
No abstract record available.
Inventors
- 👤 Otto W Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:30
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1969893A
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US2056298A
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US2112606A
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US2344998A
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US2498892A
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GB584927A
Cited
US2458699A
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US2484341A
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US2519682A
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US2449199A
Cited
US2548323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |