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Gear-Wheel.

Description: Patent for the construction of a wheel and gear rim that converts any ordinary vehicle wheel into a gear wheel.
Date: June 8, 1915
Creator: Biela, Valentine
Partner: UNT Libraries Government Documents Department

Traction-Wheel

Description: Patent for a traction wheel with a removable gripping surface which will prevent the wheel from slipping on roads or slick surfaces.
Date: January 19, 1915
Creator: Biela, Valentine
Partner: UNT Libraries Government Documents Department
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