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J. W. Greaves & Sons, Limited
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North Wales, GB
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Patents Grants
last 30 patents
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Patent Grant
Treatment of expansible materials to form lightweight aggregate
Patent number
4,906,183
Issue date
Mar 6, 1990
J. W. Greaves & Sons, Limited
Robin A. Kyffin
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES