Louis F. Keller

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New Brighton, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Truck mounted pavement marking applicator
- Patent number 5,059,061
- Issue date Oct 22, 1991
- Minnesota Mining and Manufacturing Company
- Heinrich F. Stenemann
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Method and apparatus for applying a reflective sleeve to a traffic...
- Patent number 5,047,107
- Issue date Sep 10, 1991
- Minnesota Mining and Manufacturing Company
- Louis F. Keller
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES