Petty Motor Co. Brief for United States, circuit court of appeals, 10th circuit, no. 2820, United States v. Petty Motor Company; no. 2821, [same] v. Merrell J. Brockbank, doing business as Brockbank Apparel Company; no. 2822, [same] v. William G. Grimsdell, doing business as Grocer Printing Company; no. 2823, [same] v. Charles F. Wiggs, doing business as Chicago Flexible Shaft Company; no. 2824, [same] v. Independent Pneumatic Tool Company; no. 2825, [same] v. Galigher Company; no. 2826, [same] v. Gray-Cannon Lumber Company, appeals from district court for district of Utah.