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Howard R. Tolliver
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Woodbury, MN, US
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last 30 patents
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Patent Grant
Wear-resistant transportation surface marking method and materials
Patent number
6,217,252
Issue date
Apr 17, 2001
3M Innovative Properties Company
Howard R. Tolliver
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Patents Applications
last 30 patents
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Patent Application
Matrix element pavement marker and method of making same
Publication number
20030123931
Publication date
Jul 3, 2003
Sithya S. Khieu
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Patent Application
Matrix element magnetic pavement marker and method of making same
Publication number
20030123930
Publication date
Jul 3, 2003
Gregory F. Jacobs
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES