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:
Apr. 10, 1990
Filed:
Aug. 25, 1988
Applicant:
Inventors:
Lawrence H Gilligan, Charlottesville, VA (US);
Thomas M Woolfolk, Charlottesville, VA (US);
Assignee:
Sperry Marine Inc., Charlottesville, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ; G02F / ;
U.S. Cl.
CPC ...
350355 ; 350392 ; 350393 ; 350387 ;
Abstract
A Kerr cell in an electro-optical shutter is coupled in a leg between 'H connected' switches so as to reverse the polarity of the actuating potential applied across the cell.