Improving color of lubricating oils and waxes
United States Patent 2890963

Inventors:
Dyck, Fear James Van
Publication Date:
06/16/1959
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Assignee:
SUN OIL CO
Primary Class:
208/27
Other Classes:
208/177, 208/97, 208/96, 208/290
International Classes:
C10G73/02; C10G73/00