United States Patent 2075111
Inventors:
Gulliksen, Finn H.
Staege, Stephen A.
Publication Date:
03/30/1937
Assignee:
WESTINGHOUSE ELECTRIC & MFG CO
Other Classes:
318/480, 474/103, 340/676, 250/548, 29/432, 226/45, 318/466
International Classes:
D21F1/36; D21F1/00