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. 15, 1983
Filed:
Feb. 17, 1981
Applicant:
Inventors:
Ruth C Bilofsky, Lexington, MA (US);
Ronald A Sahatjian, Lexington, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
430220 ; 430229 ;
Abstract
Photographic transparency assemblies comprising a photographic image supported on a transparent sheet material associated with a light polarizer element. The transparency assembly, including the light polarizer element, can be viewed in conjunction with a second partially crossed light polarizer element in order to modify the transmission density of the transparency image.