
    No. 485.
    United States Gypsum Co. v. National Gypsum Co. et al.
    
      Bruce Bromley, Cranston Spray, Robert C. Keck and Hugh Lynch, Jr. for appellant. Elmer Finck, Samuel I. Rosenman, Seymour D. Lewis, Malcolm A. Hoffmann and Seymour Krieger for the National Gypsum Co., Herbert W. Hirsh, Norman A. Miller and Ganson Purcell for the Certain-Teed Products Corporation, Benjamin P. DeWitt and Sidney Pepper for the Newark Plaster Co., and Joseph S. Rippey for the Ebsary Gypsum Co., Inc., appellees.
   Appeal from the United States District Court for the District of Columbia. Probable jurisdiction noted.

Mr. Justice Clark took no part in the consideration or decision of this question.  