Resistance device
United States Patent 1877482

Inventors:
Samuel, Ruben
Publication Date:
09/13/1932
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Assignee:
RUBEN PATENTS COMPANY
Primary Class:
338/99
Other Classes:
428/469, 428/64.100, 338/324, 257/417, 257/43
International Classes:
H01C10/10; H01C10/00