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Microsoft Patent For Mouse Scroll Wheel

Patent 6,700,564 granted March 4, 2004 – Input device including a wheel assembly for scrolling an image in multiple directions:

  • “Abstract: A computer input device having a housing and an engagable scroll wheel. The scroll wheel is rotatable about an axis to preferably cause vertical scrolling of an image on a display. The rotatable member is laterally movable relative to the housing. A sensor is preferably positioned within the housing for sensing lateral movement of the rotatable member. In response to sensed lateral movement of the rotatable member, the image is horizontally scrolled, preferably in the direction of the lateral movement.”
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