USA
In 1916 J. F. Irwin designed a small single-seat monoplane, designated M-T, powered by a motorcycle engine. After the First World War the company built an improved version, the M-T-2, powered by a 20 hp Meteor engine.
1919: Irwin Aircraft Co, Sacramento CA;
1928: Corning CA;
1930: Watsonville CA.
All Aero 