
    Ironrite Corporation v. Pittsburgh Reflector Co. et al., Appellants.
    
      Argued November 15, 1973.
    
      Gary H. McQuone, with him Ruffin, Easlett, Perry and Lonergan, for appellants; Lloyd F. Engle, Jr., with him Kuhn, Engle, Blair and Stein, for appellee.
   Order affirmed.

Spaulding, J., absent.  