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The patent truth, did you know…

this about Engelbart’s patent on the mouse?

Doug Engelbart’s patent on the mouse, filed June 21, 1967 and granted January 17, 1970, was described in the patent’s Abstract as follows: “An X-Y position indicator control for movement by the hand over any surface to move a cursor over the display on a cathode ray tube, the indicator control generating signals indicating its position to cause a cursor to be displayed on the tube at the corresponding position. The indicator control mechanism contains X and Y position wheels mounted perpendicular to each other, which rotate according to the X and Y movements of the mechanism, and which operate rheostats to send signals along a wire to a computer which controls the CRT display.

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