Louis C. Dufault

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Winnipeg, CA

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for forming voids under concrete floors
- Patent number 6,116,568
- Issue date Sep 12, 2000
- Void Form International Ltd.
- Michael L. Rosenblat
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Apparatus and method for supporting concrete beams, walls and the like
- Patent number 6,050,043
- Issue date Apr 18, 2000
- Void Form International Ltd.
- Michael L. Rosenblat
- E04 - BUILDING