Mezue ahịrịokwu na-esonụ: Helmuth Koinigg (3 November 1948 <unk> 6 October 1974) bụ onye ọkwọ ụgbọala na-agba ọsọ na Austria nke nwụrụ na mberede na
1974 United States Grand Prix, na nke abụọ ya Grand Prix mmalite.