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:
Nov. 21, 1989
Filed:
Mar. 21, 1988
Applicant:
Inventor:
Joseph F Vollaro, Pleasantville, NY (US);
Assignee:
The Perkin-Elmer Corporation, Norwalk, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
248362 ; 269 21 ; 355 73 ;
Abstract
A variable width transparent photographic film vacuum hold-down device. Two spaced parallel vacuum slits formed on a flat platen are connected by the longitudinal edges of the film, and when covered by a flexible cover sheet form two vacuum channels holding the film flat and unobscured to the extreme edges. Any film width not exceeding the length of the vacuum slits is held without any modification or adjustment to the device. Any length of film can be used.