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Heyman C. Duecker
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Chelmsford, MA, US
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last 30 patents
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Patent Grant
Hydraulic cement set accelerators based on nitroalcohols
Patent number
5,531,825
Issue date
Jul 2, 1996
W. R. Grace & Co.-Conn.
Ellis M. Gartner
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Patent Grant
Additive combination for hydraulic cement compositions
Patent number
4,375,987
Issue date
Mar 8, 1983
W. R. Grace & Co.
Bruce A. Lange
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES