Patent US3416426A successfully refreshed from Google Patents.
US3416426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic apparatus with rangefinder-aperture control
Assignee: Polaroid Corp
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Filing: 1966-09-29
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Granted: 1968-12-17
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Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:55
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PHOTOGRAPHIC CAMERA INCLUDING MEANS FOR ASSISTING IN THE SELECTIONOF AN APPROPRIATE EXPOSURE VALUE FOR FLASH PHOTOGRAPHY PURPOSES, COMPRISING: MEANS DEFINING AN EXPOSURE APERTURE OF AN OPTICAL AXIS FOR EXPOSING PHOTOSENSITIVE MATERIAL IN A CAMERA; VARIABLE APERTURE FOR DEFINING A RANGE OF EFFECTIVE EXPOSURE APERTURE FOR DEFINING A RANGE OF EFFECTIVE APERTURES; LIGHT GENERATING MEANS FOR GENERATING A PAIR OF LIGHT BEAMS FOR PROJECTION UPON A SUBJECT TO BE PHOTOGRAPHED; AND MEANS FOR EFFECTING RELATIVE ANGULAR MOVEMENT OF SAID BEAMS IN COORDINATION WITH ADJUSTMENTS IN THE EFFECTIVE EXPOSURE APERTURE DEFINED BY SAID APERTURE CONTROL MEANS SUCH THAT THE INTERSECTION OF THE BEAMS OCCURS AT A DISTANCE FROM THE CAMERA COORDINATED WITH THE SELECTION OF AN EFFECTIVE APERTURE WHICH IS APPROPRIATE FOR A FLASH EXPOSURE OF A SUBJECT AT SAID DISTANCE.
Claim 2
Dependent Claim
130 words
A PHOTOGRAPHIC CAMERA INCLUDING MEANS FOR ASSISTING IN THE SELECTIONOF AN APPROPRIATE EXPOSURE VALUE FOR FLASH PHOTOGRAPHY PURPOSES, COMPRISING: MEANS DEFINING AN EXPOSURE APERTURE OF AN OPTICAL AXIS FOR EXPOSING PHOTOSENSITIVE MATERIAL IN A CAMERA; VARIABLE APERTURE FOR DEFINING A RANGE OF EFFECTIVE EXPOSURE APERTURE FOR DEFINING A RANGE OF EFFECTIVE APERTURES; LIGHT GENERATING MEANS FOR GENERATING A PAIR OF LIGHT BEAMS FOR PROJECTION UPON A SUBJECT TO BE PHOTOGRAPHED; AND MEANS FOR EFFECTING RELATIVE ANGULAR MOVEMENT OF SAID BEAMS IN COORDINATION WITH ADJUSTMENTS IN THE EFFECTIVE EXPOSURE APERTURE DEFINED BY SAID APERTURE CONTROL MEANS SUCH THAT THE INTERSECTION OF THE BEAMS OCCURS AT A DISTANCE FROM THE CAMERA COORDINATED WITH THE SELECTION OF AN EFFECTIVE APERTURE WHICH IS APPROPRIATE FOR A FLASH EXPOSURE OF A SUBJECT AT SAID DISTANCE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |