IBM provides entire recent US patents (and foreign???)
downloadable free as multiple .GIF files:
US Patents -- IBM -- Patent Number Search
http://patent.womplex.ibm.com/patquery
US Patents -- IBM -- Boolean Text Search
http://patent.womplex.ibm.com/boolquery
US Patents -- IBM -- Advanced Text Search
http://patent.womplex.ibm.com/advquery
Patents -- World Wide Index of Patent Offices
http://www.piperpat.co.nz/patoff.html
US Patents -- USPTO Patent Number Search
http://patents.uspto.gov/access/search-num.html
US Patents -- USPTO -- Boolean Search
http://patents.uspto.gov/access/search-bool.html
US Patents -- USPTO -- Advanced Search
http://patents.uspto.gov/access/search-adv.html
Patents -- CNIDR -- US Database Access
http://patents.cnidr.org/access/access.html
..