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4 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
Telephone System.
Patent for "a novel arrangement of circuits in connection with a pair of telephone-receivers at each subscriber's station, whereby the subscriber can cut out the station, so that the conversation is being carried on between two subscribers cannot be heard by the other subscribers on the same line" (lines 9-17).
Date:
July 4, 1899
Creator:
Bennett, William W.
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