United States Patent US006724369B2 12 10 Patent No US 6 724 369 B2 Slotta 45 Date of Patent Apr 20 2004 54 TEXTURED CUSHION FOR KEYBOARD 5 488 206 A 1 1996 Wu 200 6 CURSOR CONTROL STICK 5 504 502 4 1996 Arita et al 5 568 987 10 1996 Franz 75 Inventor Mark R Slotta Highland MI US 5 570 112 A 10 1996 Robinson 5 670 988 A 9 1997 Tickle 5 5 691 747 11 1997 Amano 345 167 73 As
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