Roger E. Luehrs

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Ely, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Cube corner cavity based retroreflectors with transparent fill mate...
- Patent number 8,596,799
- Issue date Dec 3, 2013
- 3M Innovative Properties Company
- Kenneth L. Smith
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Cube corner cavity based retroreflectors with transparent fill mate...
- Patent number 7,182,829
- Issue date Feb 27, 2007
- 3M Innovative Properties Company
- Kenneth L. Smith
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Cube corner cavity based retroeflectors with transparent fill material
- Patent number 6,280,822
- Issue date Aug 28, 2001
- 3M Innovative Properties Company
- Kenneth L. Smith
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
CUBE CORNER CAVITY BASED RETROREFLECTORS WITH TRANSPARENT FILL MATE...
- Publication number 20090169823
- Publication date Jul 2, 2009
- 3M Innovative Properties Company
- Kenneth L. Smith
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Cube corner cavity based retroreflectors with transparent fill mate...
- Publication number 20060108062
- Publication date May 25, 2006
- 3M Innovative Properties Company
- Kenneth L. Smith
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Cube corner cavity based retroreflectors with transparent fill mate...
- Publication number 20010033907
- Publication date Oct 25, 2001
- 3M Innovative Properties Company
- Kenneth L. Smith
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL