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Burglar-Alarm.

Description: Patent for a portable device that can be hung on a door knob and sound an alarm when the knob is turned, including instructions and illustrations.
Date: August 18, 1914
Creator: Dick, Archie P., Jr.
Partner: UNT Libraries Government Documents Department

Rail-Joint Chair.

Description: Patent for a new rail-joint chair used in the connection between rails to prevent rail movement, including illustrations.
Date: June 9, 1914
Creator: Williams, Charles C.
Partner: UNT Libraries Government Documents Department
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