Case Biedenharn Realty Company, Inc. v. United States, 526 F.2d 409 (th Cir. 1976) discusses the controlling factors. The first factor is Frequency and Substantiality of Sales.
Case Biedenharn Realty Company, Inc. v. United States, 526 F.2d 409 (th Cir. 1976) discusses the controlling factors. The first factor is Frequency and Substantiality of Sales.