Jennings, Clawson, Griswold, Roover Brothers, Mills Novelty Company, William Gent, Exhibit Supply, International Mutoscope, Pace, Bally Reliance, Chester Pollard, Rock-Ola Manufacturing, Pulver, Manikin Vendor, Hance, Columbus, and Charles Fey. Some of the well known companies who manufactured coin op machines were: Caille Brothers, Watling, O.D.