Tool for Truing and Dressing Commutators.
Description:
Patent for a tool "for truing and dressing the commutators of dynamo motors... especially designed for truing and dressing the commutators of motors employed for propelling cars" (lines 9-14).
Date:
June 25, 1907
Creator:
Frick, Claus Henry
Partner:
UNT Libraries Government Documents Department