
    (No. 5356
    American Oil Company Incorporated, A Corporation, Claimant, vs. State of Illinois, Various State Agencies, Respondent.
    
      Opinion filed May 11, 1971.
    
    Gillespie, Burke and Gillespie, Attorney for Claimant.
    William J. Scott, Attorney General; William E. Webber, Assistant Attorney General, for Respondent.
   Perlin, C.J.  