특허 내용
http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070061297%22.P
GNR.&OS=DN/20070061297&RS=DN/20070061297
http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220070061297%22.P
GNR.&OS=DN/20070061297&RS=DN/20070061297
관련기사
http://googlesystem.blogspot.com/2007/03/how-google-blog-search-ranks-results.html
자료 검색을 하다보면 구글을 비롯해 많은 내용들에 특허가 걸려있다.
일하기 어렵다.흠...