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2164500
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Patent Grant
2164500
References
Source
Patent Number
2,164,500
Date Filed
Not available
Date Issued
Tuesday, July 4, 1939
84 years ago
CPC
C04B14/08 - Diatomaceous earth
US Classifications
502 - Catalyst, solid sorbent, or support therefor: product or process of making
106 - Compositions: coating or plastic
162 - Paper making and fiber liberation
523 - Synthetic resins or natural rubbers
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