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La bildo estas kopiita de wikipedia:en. La originala priskribo estas: An example of an obvious patent - the comb-over hairstyle (U.S. Patent 4,022,227) From http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum