
    N. P. Severin and A. N. Severin, trading as N. P. Severin Company, appellants, v. American Heating and Plumbing Corporation, appellee.
    Gen. No. 36,556.
    Opinion filed July 5, 1933.
    J. E. Yaffe, for appellants. Marvin A. Jersild and Harold E. Christensen, for appellee.
   Mr. Justice O’Connor

delivered the opinion of the court.  