How Old Computer Mouse?

The mouse was invented by Doug Engelbart, who first sketched it on April 29, 1964. The patent for the computer mouse was filed on December 17, 1970 ( application number 1738087 ) and subsequently granted to Apple Inc. (then named “Apple Computer”), IBM Corp., Microsoft Corporation, and Gauss during the same month. The earliest reported date of post-patent production is November 1008.
A readout from a 1975 MOUSE/WORD combination found in a word processor program listing suggests that this device might have been used as early as 1973. This patent originally described an intermediate device between a keyboard and whatever display system being used…and which has been called by some people the “world”…

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