
    (No. 6204
    RCA Computer Systems Division, Claimant, vs. State of Illinois, Department of Revenue, Respondent.
    
      Opinion filed January 11, 1972.
    
    RCA Computer Systems Division, Claimant, pro se.
    William J. Scott, Attorney General; William E. Webber, Assistant Attorney General, for Respondent.
   Perlin, C.J.  