Corrected link
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,947,978.WKU.&OS=PN/6,947,978&RS=PN/6,947,978
Federal websites can be a pain to link to sometimes.
Current Events » in reply to Here's the patent
http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,947,978.WKU.&OS=PN/6,947,978&RS=PN/6,947,978
Federal websites can be a pain to link to sometimes.