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3 Matching Results
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Hotel-Register.
Patent for a hotel register cabinet for holding registry sheets with a revolving top.
Date:
July 4, 1911
Creator:
Duncan, Selden
System:
The Portal to Texas History
Time-Switch.
Patent for a timer for turning on and off electric lights.
Date:
July 4, 1911
Creator:
Chappel, James Mack
System:
The Portal to Texas History
Music-Indicator.
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
System:
The Portal to Texas History