1 Matching Results

Search Results

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