US3195431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic accessory
Assignee: Polaroid Corp
•
Filing: 1961-08-08
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Granted: 1965-07-20
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Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Rolf M Augustin
- 👤 Vaito K Eloranta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:26
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B17/00; G03B17/02; G03B17/12; G03B3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN ATTACHMENT FOR A PHOTOGRAPHIC CAMERA HAVING AN OPTICAL LENS SYSTEM, SAID ATTACHMENT COMPRISING: (A) AN OPAQUE MEMBER WITH A PLURALITY OF CIRCULAR APERTURES OF DIFFERENT DIAMETERS THERETHROUGH; (B) MEANS FOR MOUNTING SAID OPAQUE MEMBER IN COVERING RELATION TO SAID LENS SYSTEM WHEREBY SAID APERTURES ARE SELECTIVELY POSITIONABLE IN SUBSTANTIALLY COAXIAL ALIGNMENT WITH THE OPTICAL AXIS OF SAID LENS SYSTEM TO FORM AN EXPOSURE APERTURE THEREFOR; (C) LIGHT-REFLECTING MEANS AT LEAST PARTIALLY ENCIRCLING SAID EXPOSURE APERTURE; (D) MEANS FOR MOUNTING ONE OR MORE SOURCES OF ILLUMINATION IN A POSITION RELATIVE TO SAID REFLECTING MEANS WHEREBY ILLUMINATION FROM SAID SOURCES IS REFLECTED BY SAID REFLECTING MEANS FORWARDLY OF SAID CAMERA; (E) MEANS FOR MOUNTING A CLOSE-UP LENS IN COVERING
Claim 2
Dependent Claim
118 words
AN ATTACHMENT FOR A PHOTOGRAPHIC CAMERA HAVING AN OPTICAL LENS SYSTEM, SAID ATTACHMENT COMPRISING: (A) AN OPAQUE MEMBER WITH A PLURALITY OF CIRCULAR APERTURES OF DIFFERENT DIAMETERS THERETHROUGH; (B) MEANS FOR MOUNTING SAID OPAQUE MEMBER IN COVERING RELATION TO SAID LENS SYSTEM WHEREBY SAID APERTURES ARE SELECTIVELY POSITIONABLE IN SUBSTANTIALLY COAXIAL ALIGNMENT WITH THE OPTICAL AXIS OF SAID LENS SYSTEM TO FORM AN EXPOSURE APERTURE THEREFOR; (C) LIGHT-REFLECTING MEANS AT LEAST PARTIALLY ENCIRCLING SAID EXPOSURE APERTURE; (D) MEANS FOR MOUNTING ONE OR MORE SOURCES OF ILLUMINATION IN A POSITION RELATIVE TO SAID REFLECTING MEANS WHEREBY ILLUMINATION FROM SAID SOURCES IS REFLECTED BY SAID REFLECTING MEANS FORWARDLY OF SAID CAMERA; (E) MEANS FOR MOUNTING A CLOSE-UP LENS IN COVERING
References Cited (Backward Citations)
US2006007A
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US2018963A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |