
    UNIVERSAL BATTERY CO. v. UNITED STATES VESTA BATTERY CORP. v. SAME BASSICK MANUFACTURING CO. v. SAME F. W. STEWART MFG. CORP. v. SAME GEMCO MANUFACTURING CO. v. SAME
    [66 C. Cls. 748; 67 id. 711; 68 id. 366; 67 id. 275; Id. 287; 281 U. S. 580]
   Mr. Justice Van Devanter

delivered the opinion of the Supreme Court May 26, 1930.  