219 N.W.2d 437 WALKER EMPLOYMENT SERVICE, INC. v. HARRY D. PARKHURST, JR., AND ANOTHER. No. 44442.Supreme Court of Minnesota. June 21, 1974. Contracts — employment contract containing restrictive covenant — when enforceable. 1. A restrictive covenant which was not unreasonable either in terms of area or time, and which was utilized for the obvious reason […]