Patent US3561866A successfully refreshed from Google Patents.
US3561866A
Expired / Lapsed
US
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Film color density setting indicator
Assignee: Cinefx Inc
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Filing: 1968-02-13
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Granted: 1971-02-09
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Expires: 1988-02-13
Abstract
Abstract A METHOD TO RAPIDLY COLOR BALANCE AND DENSITY BALANCE A FILM INTERPOSITIVE AND A FILM COLOR DENSITY SETTING INDICATOR COMPRISING A LIGHT, A FILM GUIDE, A PLURALITY OF COLOR AND DENSITY FILTERS, APPROPRIATE LENSES, AND A SCREEN IN OPERATIVE OPTICAL ALIGNMENT, WHEREBY A COLOR IMAGE DISPLAYED ON THE SCREEN CAN BE COLOR AND DENSITY BALANCED.
Inventors
- 👤 Lester Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:59
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |