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. 28, 1992
Filed:
Sep. 14, 1990
Applicant:
Inventors:
John M Stack, Trenton, NJ (US);
Frank S DiMinno, Cherry Hill, NJ (US);
Assignee:
Edmund Scientific Company, Barrington, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09B / ;
U.S. Cl.
CPC ...
434303 ; 356336 ;
Abstract
Apparatus for and a method of displaying a laser beam are provided. The apparatus comprises an elongate chamber which has a viewing window and which is filled with a clear aqueous suspension of a water-dispersible polymer. The laser beam is displayed by projecting it into the suspension-filled chamber through one end of the chamber.