
    (No. 6197
    Xerox Corporation, Claimant, vs. State of Illinois, Bureau of Administration, Division of Highways, Respondent.
    
      Opinion filed November 9, 1971.
    
    Xerox Corporation, Claimant, pro se.
    William J. Scott, Attorney General; William E. Webber, Assistant Attorney General, for Respondent.
   Perlin, C.J.  