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. 02, 1993
Filed:
Aug. 21, 1991
Applicant:
Inventors:
Richard A Miller, Stillwater, MN (US);
Kenneth A Aho, Chisago City, MN (US);
Sanford Cobb, Jr, St. Mary's, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362340 ; 362268 ; 362 31 ;
Abstract
A lighting element has a light source positioned so as to provide a beam of light at a grazing angle to a light extractor. The extractor has a plurality linear triangular prism on the side struck by the beam of light. The prisms lie in a smooth arcuate curve.