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:
Sep. 10, 2002
Filed:
Oct. 08, 1999
Applicant:
Inventors:
David L. Wortman, Stillwater, MN (US);
Sanford Cobb, Lakeland, MN (US);
Kenneth A. Epstein, St. Paul, MN (US);
Mark E. Gardiner, Santa Rosa, CA (US);
Wade D. Kretman, Afton, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 7/22 ;
U.S. Cl.
CPC ...
F21V 7/22 ;
Abstract
A lightguide includes an input edge surface, a back surface and an output surface. A reflector is directly secured to the back surface by, for example, adhesive bonding.