
    AMERICAN ENGINEERING COMPANY, Plaintiff, Appellant, v. STOKER CASTINGS & SERVICE, Inc., et al., Defendants, Appellees.
    No. 4131.
    Circuit Court of Appeals, First Circuit.
    July 15, 1946.
    Kennard N. Ware, of Philadelphia, Pa. (J. Lewis Stackpole, of Boston, Mass, Carl F. Sibbe, of Philadelphia, Pa, Fish, Richardson & Neave, of Boston, 'Mass, and. Howson & Howson, of Philadelphia, Pa,, of counsel), for appellant.
    Thomas M. Vinson, of Winchester,Mass, for appellees.
    Before MAGRUDER, MAHONEY, and WOODBURY, Circuit Judges.
   PER CURIAM.

The judgment is affirmed on the opinion of the' District Court filed December 21, 1944, 66 F.Supp. 816; appellees recover costs of appeal.  