US2949812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for producing color positives in true natural colors
Assignee: Individual
•
Filing: 1957-11-04
•
Granted: 1960-08-23
•
Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Philip D Lanco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:35
CPC Classifications
F; F42; F42C; F42C13/00; F42C13/02; G; G03; G03B; G03B27/00; G03B27/72; G03B27/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US182099A
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US1439035A
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US1878857A
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US1879236A
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US2050552A
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US2249730A
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CH220273A
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US2601804A
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GB712911A
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GB748712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |