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Hotel-Register.

Description: Patent for a hotel register cabinet for holding registry sheets with a revolving top.
Date: July 4, 1911
Creator: Duncan, Selden
Partner: UNT Libraries Government Documents Department

Time-Switch.

Description: Patent for a timer for turning on and off electric lights.
Date: July 4, 1911
Creator: Chappel, James Mack
Partner: UNT Libraries Government Documents Department

Music-Indicator.

Description: Patent for a music indicator that shows the names of the notes on the piano and how to form various chords and scales to assist the user in learning music.
Date: July 4, 1911
Creator: MacMaster, James
Partner: UNT Libraries Government Documents Department
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