Duane A. Rondeau

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Alpena, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Automated mold changing system for concrete product molding machine...
- Patent number 6,530,769
- Issue date Mar 11, 2003
- Besser Company
- Duane A. Rondeau
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus for texturizing the upper surfaces of concrete products
- Patent number 6,257,865
- Issue date Jul 10, 2001
- Besser Company
- Duane A. Rondeau
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Concrete product mold inserting and removing apparatus and method
- Patent number 5,952,015
- Issue date Sep 14, 1999
- Besser Company
- James W. DeWyre
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method for texturizing the face of concrete products
- Patent number 5,942,181
- Issue date Aug 24, 1999
- Besser Company
- Duane A. Rondeau
- B28 - WORKING CEMENT, CLAY, OR STONE