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Improvement in Speed and Time Recorders.

Description: Patent for improvements in recording instruments to "document of all the movements of a locomotive while in charge of the engineer, to record any stoppages that may be made; the duration of such stoppages, and any backward motion of the locomotive at any point during the trip." (Lines 7-13) Illustration is included.
Date: September 9, 1879
Creator: Richardson, John D.
Partner: UNT Libraries Government Documents Department

Electric Fire and Burglar Alarm

Description: Patent for new and useful improvements to fire and burglar alarms. The invention includes improvements so that frequent battery changes are not necessary.
Date: February 5, 1918
Creator: Bates, Lewis E. & Hanks, Vollie V.
Partner: UNT Libraries Government Documents Department
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