MULTIFUNCTIONAL CONNECTOR PLUG AND METHOD FOR PORTABLE ELECTRONIC DEVICES.

Lawrence Lam, Bi-stable stylus for use as an input aid ,(2002)

Lun-Chuan Chang, Pen-based input and data storage device ,(2003)

Mark Flowers, Michelle Fitts, Joseph B. Miller, Rick Adolf, Carol Thies, Antonia Kohl, Alice Chen, David Goldstein, Curtis Cole, Michael C. Wood, Interactive hand held apparatus with stylus ,(2004)

Robert Lee Helm, Device for facilitating active data entry ,(2010)

Mark C. Solomon, Brad Hodson, Computer stylus with integrated memory ,(2007)

Bellet-Odent Franceis, I-Cheng Chuang, Yao-Chung Lin, Portable Apparatus and Stylus ,(2006)