U.S. federal trademark · Serial No. 73786923 · Reg. No. 1588600
PERIPHERAL COMPUTER GRAPHICS INPUT APPARATUS WITH APPLICATIONS IN FIELDS SUCH AS GRAPHICS ANIMATION, FLIGHT SIMULATION, FLOW ANALYSIS, AND STEREO PLOTTING, SPECIFICALLY A RIGIDLY MOUNTED HAND-SIZE BALL WHICH WHEN TOUCHED CAUSES A CORRESPONDING MOVEMENT IN TWO OR THREE DIMENSIONS OF IMAGES DISPLAYED ON A COMPUTER SCREEN
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