. . . "1270Oct 21, 1998May 4, 2004Luidia Inc.Piezoelectric transducer for data entry deviceUS6731271Mar 16, 2000May 4, 2004Canon Kabushiki KaishaCoordinate input device and its control method, and computer readable memoryUS6871786Nov 3, 2000Mar 29, 2005Symbol Technologies, Inc.Method and apparatus for reading and writing indicia such as bar codes using a scanned laserUS6875933May 10, 2002Apr 5, 2005Luidi" . .