| prov:value
| - rises, Inc.Electrographic position location apparatus and methodUS6668156Feb 5, 2001Dec 23, 2003Leapfrog Enterprises, Inc.Print media receiving unit including platform and print mediaUS6729543Mar 5, 1999May 4, 2004Audiovelocity, Inc.Page identification system and methodUS6750978 *Aug 4, 2000Jun 15, 2004Leapfrog Enterprises, Inc.Print media information system with a portable print media receiving u
|