Title:
Recovery of hydrocarbons
United States Patent 2412765

Inventors:
Edward, Buddrus
Carney, Samuel C.
Publication Date:
12/17/1946
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Assignee:
PHILLIPS PETROLEUM CO
Primary Class:
166/266
Other Classes:
166/401, 166/267
International Classes:
E21B43/16; E21B43/40; E21B43/34