Telephone-Switch
Description:
Patent for a telephone switch. "This invention relates to switches for telephone and more particularly to shifting devices for short-circuiting certain classes of lines, and the object is to provide a system of cutting off communication in what are called 'party' lines" (line 8-13). Illustration included.
Date:
April 30, 1907
Creator:
Mount, Timothy S.
Partner:
UNT Libraries Government Documents Department