Frederick M. Boehnert

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Highland Park, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Gypsum-containing product having increased resistance to permanent...
- Patent number 6,632,550
- Issue date Oct 14, 2003
- United States Gypsum Company
- Qiang Yu
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES