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:
Dec. 07, 1976
Filed:
Apr. 28, 1975
Applicant:
Inventor:
Dieter Topfer, Wiesbaden-Biebrich, DT;
Assignee:
Hoechst Aktiengesellschaft, , DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 91 ; 355 76 ;
Abstract
This invention relates to a printing frame for the exposure of printing plates comprising two closable components, flexible sheet means secured to one of said components and being adapted to press a printing plate and an original together and maintain them in close contact during exposure, and means for exerting air pressure on said flexible sheet means in order to press said printing plate and original together.