Herman Casler

Syndicate, along with W.K-L. Dickson, Elias Koopman, and Henry N "Harry" Marvin, which eventually was incorporated into the American Mutoscope Company in December 1895.

Casler, Dickson, and Marvin had worked together in 1893 on a detective camera the size of a watch called the Photoret.

Casler's patents, which he assigned to American Mutoscope in January 1896, were used as security for financing the new company.

After Biograph switched to 35 mm film production in 1902, and the number of frames per second was halved, Casler also helped John Pross to develop a three-blade projector shutter that greatly reduced flicker in the projected image.

He retired in 1926, but continued to serve as a consulting engineer to a number of corporations, and filed his last patent in 1937, two years before his death in Canastota, New York.