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:
Mar. 21, 1978
Filed:
Jun. 28, 1976
Applicant:
Inventor:
Edward C Bialczak, Guilford, CT (US);
Assignee:
Addressograph Multigraph Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
96 75 ; 96 49 ;
Abstract
A translucent sheet bearing opaque graphic intelligence thereon coated with a film which absorbs ultraviolet light, whereby the passage of visible light therethrough projects a legible image while light in the ultraviolet range is not transmitted so that diazotype copies cannot be produced of the graphic intelligence.