US2925761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable photographic film developing apparatus
Assignee: Chicago Bridge and Iron Co
•
Filing: 1955-09-21
•
Granted: 1960-02-23
•
Expires: 1975-09-21
Abstract
No abstract record available.
Inventors
- 👤 Donald R Peary
- 👤 Rex E Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:14
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/04; G03D13/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US495241A
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US921338A
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GB502014A
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US2359612A
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US2447684A
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US2500251A
Cited
US2628545A
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US2709223A
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US2726337A
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US2747480A
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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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |