58 N.W.2d 739 JACK S. WELLER v. NORTHWEST AIRLINES, INC.[1] No. 35,872.Supreme Court of Minnesota. May 15, 1953. [1] Reported in 58 N.W.2d 739. Negligence — contributory negligence — sufficiency of evidence. 1. Plaintiff’s testimony as to appearance of rubber-like protrusion on platform between ramp and entrance to plane considered and held not to establish […]