
    No. 493.
    American Bitumuls & Asphalt Co. et al. v. United States.
    
      Grace M. Stewart for the American Bitumuls & Asphalt Co., petitioner. Solicitor General Rankin, Assistant Attorney General Doub, Samuel D. Slade and Herman Marcuse for the United States.
   Court of Customs and Patent Appeals. Certiorari denied.  