Drilling muds
United States Patent 2773031

Inventors:
Tailleur, Rodolfo J.
Publication Date:
12/04/1956
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Assignee:
GULF OIL CORP
Primary Class:
507/116
Other Classes:
507/126, 507/135, 507/138, 507/137
International Classes:
C09K8/28; C09K8/02
Foreign References:
CA476310A