LANGFELDER et al. v. UNIVERSAL LABORATORIES, Inc. No. 9329.Circuit Court of Appeals, Third Circuit.Argued May 6, 1947. Decided October 1, 1947. Appeal from the District Court of the United States for the District of Delaware; Paul Leahy, Judge. Action by Fred Langfelder and Sidney Cohen, against Universal Laboratories, Inc., formerly known as Vadsco Sales Corporation, […]