Title:
Manufacture of carburized silica
United States Patent 2156591

Inventors:
Alfred, Jacobson Carl
Publication Date:
05/02/1939
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Assignee:
SEALCO BY PRODUCTS COMPANY
Primary Class:
502/412
Other Classes:
106/486, 106/475, 201/20, 106/502, 106/487
International Classes:
C01B33/12; C09C1/30; C09C3/06; C01B33/00; C09C1/28