Galen Hunt, Gerald Cermak, and Jr. Robert J. Stets
19 February 2008
| Type | Other |
| URL | http://patft.uspto.gov/netacgi/nph-Parser?TERM1=7334235&Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=0&f=S&l=50 |
| Book title | U.S. Patent 7,334,235 |
| Journal | U.S. Patent |