US3672766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color printing method
Assignee: United States Department of the Navy
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Filing: 1971-04-15
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Granted: 1972-06-27
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Expires: 1991-04-15
Abstract
Abstract THE CORRECT COOLER BALANCE REQUIRED FOR MAKING COLOR PRINTS IN COLOR PHOTOGRAPHY FROM A COLOR NEGATIVE IS DETERMINED BY PRINTING THE CLEAR, UNEXPOSED, BUT PROCESSED PORTION OF THE NEGATIVE WITH THE CORRECT FILTRATION SO AS TO YIELD EQUAL DENSITIES IN THE PRINT TO RED, BLUE, AND GREEN LIGHT.
Inventors
- 👤 Marilyn Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:23
CPC Classifications
G; G03; G03C; G03C7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |