US3077140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color filter devices for photographic printers and enlargers
Assignee: Simmon Brothers Inc
•
Filing: 1960-02-17
•
Granted: 1963-02-12
•
Expires: 1980-02-17
Abstract
No abstract record available.
Inventors
- 👤 Simmon Alfred
- 👤 Louis L Weisglass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:11
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
ILLUMINATING APPARATUS FOR ADJUSTING THE COLOR OF LIGHT AND DIRECTING IT THROUGH A PHOTOGRAPHIC NEGATIVE OR THE LIKE COMPRISING A SOURCE OF LIGHT, A LIGHT COLLECTING REFLECTOR FOR RECEIVING THE LIGHT AND PASSING IT ON FROM SAID SOURCE, AN OUTLET APERTURE IN SAID REFLECTOR FOR PASSING SAID LIGHT, AN INTEGRATING CHAMBER WITH A DIFFUSELY REFLECTING INTERIOR SURFACE, A RECEIVING APERTURE IN SAID CHAMBER FOR LIGHT PASSING FROM SAID REFLECTOR THROUGH SAID OUTLET APERTURE, ANOTHER APERTURE IN SAID CHAMBER FOR DIRECTING DIFFUSED LIGHT THEREFROM UPON A NEGATIVE OR THE LIKE, A POCKET THROUGH WHICH LIGHT FROM SAID REFLECTOR PASSES ON ITS WAY FROM SAID OUTLET APERTURE TO SAID RECEIVING APER-
Claim 2
Dependent Claim
109 words
ILLUMINATING APPARATUS FOR ADJUSTING THE COLOR OF LIGHT AND DIRECTING IT THROUGH A PHOTOGRAPHIC NEGATIVE OR THE LIKE COMPRISING A SOURCE OF LIGHT, A LIGHT COLLECTING REFLECTOR FOR RECEIVING THE LIGHT AND PASSING IT ON FROM SAID SOURCE, AN OUTLET APERTURE IN SAID REFLECTOR FOR PASSING SAID LIGHT, AN INTEGRATING CHAMBER WITH A DIFFUSELY REFLECTING INTERIOR SURFACE, A RECEIVING APERTURE IN SAID CHAMBER FOR LIGHT PASSING FROM SAID REFLECTOR THROUGH SAID OUTLET APERTURE, ANOTHER APERTURE IN SAID CHAMBER FOR DIRECTING DIFFUSED LIGHT THEREFROM UPON A NEGATIVE OR THE LIKE, A POCKET THROUGH WHICH LIGHT FROM SAID REFLECTOR PASSES ON ITS WAY FROM SAID OUTLET APERTURE TO SAID RECEIVING APER-
References Cited (Backward Citations)
US1325204A
Cited
GB191215678A
Cited
US2300970A
Cited
US2416919A
Cited
US2438219A
Cited
GB663250A
Cited
US2867916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |