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Hand truck

Image Number 7 for United States Patent #4681330.

A hand truck has a load supporting frame having a handle, and a load supporting platform provided on a lower portion of the load supporting frame. A pair of main wheels are provided on a lower portion of the load supporting frame, and an auxiliary frame is pivotally mounted on a lower portion of the load supporting frame. A pair of auxiliary wheels are provided on ends of the auxiliary frame. An extensible cylinder device is provided between the load supporting frame and the auxiliary frame so as to change the angle there-between.

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