"Marcel Riffard (* 1886; died 1981) was a French aeronautical engineer. In the 1930s, while working at the design department of Caudron-Renault, he designed a series of racer aircraft, as well as utility aircraft such as the Caudron Simoun.He also designed race and record cars for Renault and Panhard (Le Mans 1953)."@en . "French aeronautical engineer" . "1886Z"^^ . "Riffard, Mercel"@en . "1981Z"^^ .