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Telephone Signal

Description: Patent for a telephone signals. This inventions is a switchboard drop of the visual signal for magneto system at a central office. Illustration included.
Date: January 8, 1907
Creator: Schuessler, Gustavus W.
Partner: UNT Libraries Government Documents Department

Telephone Call Box.

Description: Patent for reduction of movements in an improved telephone call box with illustrations.
Date: January 29, 1884
Creator: Oram, John M.; Sutton, Henry M. & Garrett, Henry
Partner: UNT Libraries Government Documents Department

Disinfectant Telephone-Mouthpiece

Description: Patent for a mouthpiece for transmitters that contains a disinfectant used to prevent the spread of bacteria that has been exhaled into the mouthpiece. Illustrations included.
Date: January 18, 1910
Creator: Dixon, Joseph W.
Partner: UNT Libraries Government Documents Department

Electric Switch.

Description: Patent for switches or connectors that connect sections of wires used for telephones or telegraphs
Date: January 9, 1912
Creator: Du Val, James Erl & Lee, Ezra A.
Partner: UNT Libraries Government Documents Department
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