1913 – Manipulator Arm For Diving Bell – Charles Petit (French)
1913 – Manipulator Arm For Diving Bell by Charles Petit. Moving means for the Arbeitsgeraet of diving equipment Publication number DE321916 C Publication date Jun 15, 1920 Filing date Mar 5, 1913 Applicant Charles Petit See German patent here. See other early Underwater Robots here.