tial period of time."); Vemco. Inc. v. Camardella 23 F.3d 129, 134 (6th Cir.1994) (finding seventeen month period insufficient to show continuity); Religious Tech. Ctr. v. Wollersheim, 971 F.2d 364, 366-67 (9th Cir.1992)( "We have found no case in which a court [of appeals] has held the [continuity] requireme