sentences:  He was the head of Samuel Bischoff Productions, a low-budget production company in the 1930s.He drew the attention of Columbia Pictures head Harry Cohn, who hired him to supervise the studio's feature film productions.In 1932, he moved to Warner Bros. and when Hal B. Wallis became production chief after Darryl F. Zanuck left in 1933, Bischoff and Henry Blanke were the main producers at the studio.