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. 16, 1980
Filed:
Jun. 07, 1974
Applicant:
Inventor:
Terry J Scheffer, Wettingen, CH;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
3503 / ; 350337 ;
Abstract
An arrangement for a polychrome display comprises in serial association a light source, a linear polarizing filter, at least one nematic liquid crystal rotating element, and either a passive birefringent retardation plate followed by a further neutral linear polarizing filter or a selective polarizer.