The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 1978
Filed:
Oct. 13, 1976
Applicant:
Inventor:
Frederic B Handsman, Bayside, NY (US);
Assignee:
Ehrenreich Photo-Optical Industries, Inc., Woodbury, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 74 ;
Abstract
This easel for photographic enlarging has retainers for holding paper in position on the easel, and improved means for adjusting the retainers for paper sheets of different size. There are clamps for holding the retainers in set positions and provision for preventing parts of the clamps from becoming disconnected when turned in directions to release them. A single clamping screw for each retainer expedites adjustment. Masks for paper of different size have the same spacing of screw-receiving openings corresponding to a single standardized spacing of threaded openings in the easel plate.