Patent US3235990A successfully refreshed from Google Patents.
US3235990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mount for photographic transparencies
Assignee: Individual
•
Filing: 1963-11-26
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Granted: 1966-02-22
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Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Back Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:53
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A MOUNT FOR PHOTOGRAPHIC TRANSPARENCIES COMPRISING TWO MEMBERS OF IDENTICAL SIZE AND SHAPE ADAPTED TO BE ASSEMBLED IN FACE TO FACE RELATIONSHIP WITH A TRANSPARENCY HELD BETWEEN THEM, EACH OF SAID MEMBER BEING OF APPROXIMATELY SQUARE OUTLINE WITH AN UPSTANDING MARGIANL FLANGE ALONG ONE EDGE OF ITS INNER FACE AND ALONG APPROXIMATELY ONE HALF OF THE LENGTH OF TWO ADJACENT EDGES, AND HAVING A SLOT EXTENDING THROUGH THE ENTIRE THICKNESS OF THE MEMBER IN A LOCATION ADJACENT SAID FIRST MENTIONED EDGE AND AN UPSTANDING LOCKING FLANGE ADJACENT THE OPPOSITE EDGE, EACH MEMBER ALSO HAVING A CENTRAL APERTURE, THE PARTS BEING SO DESINGED AND PROPOR-
Claim 2
Dependent Claim
104 words
A MOUNT FOR PHOTOGRAPHIC TRANSPARENCIES COMPRISING TWO MEMBERS OF IDENTICAL SIZE AND SHAPE ADAPTED TO BE ASSEMBLED IN FACE TO FACE RELATIONSHIP WITH A TRANSPARENCY HELD BETWEEN THEM, EACH OF SAID MEMBER BEING OF APPROXIMATELY SQUARE OUTLINE WITH AN UPSTANDING MARGIANL FLANGE ALONG ONE EDGE OF ITS INNER FACE AND ALONG APPROXIMATELY ONE HALF OF THE LENGTH OF TWO ADJACENT EDGES, AND HAVING A SLOT EXTENDING THROUGH THE ENTIRE THICKNESS OF THE MEMBER IN A LOCATION ADJACENT SAID FIRST MENTIONED EDGE AND AN UPSTANDING LOCKING FLANGE ADJACENT THE OPPOSITE EDGE, EACH MEMBER ALSO HAVING A CENTRAL APERTURE, THE PARTS BEING SO DESINGED AND PROPOR-
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |