Photo 1: picture of my working robot. It is radio controlled with an ESC to control motor speed, a servo to move the legs. The rotor came from a PowerBall toy. See video for it in action.
Photo 2: patent picture of John Jameson's Gyro Walker.
Photo 3: picture of Jameson's robot walker in action - note: it was a wind up toy and he licensed his patent to some toy companies which made some toy robots based on his ideas.