Process of carbonizing
United States Patent 2356956

Inventors:
Thurber, Elmer A.
Wooten, Leland A.
Publication Date:
08/29/1944
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Assignee:
BELL TELEPHONE LABOR INC
Primary Class:
427/78
Other Classes:
427/122, 427/249.170, 427/336, 427/126.600
International Classes:
H01J19/00