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Rail-Joint.

Description: Patent for the addition of interlocking extensions onto the ends of railway joints. The interlocking extensions make bolts and nuts unnecessary and provide a snug fit, which eliminates both lateral and longitudinal movement.
Date: October 10, 1911
Creator: Free, Andrew
Partner: UNT Libraries Government Documents Department

Battery-Connector

Description: Patent for a battery connector for providing electricity in homes without being connected to a power plant.
Date: October 15, 1912
Creator: Hall, James Monroe
Partner: UNT Libraries Government Documents Department
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