1952 – Deep-Sea Diving Robot – Al Mikalow (American)

TREASURE HUNTING ROBOT-A 1,500 pound diving robot is checked over by diver Al Mikalow (right) and Paul Ilsley, a diving instructor at Mikalow's diving school in Oakland, Calif. Mikalow intents to dive in the robot later this summer in a search for treasure which legend says lies waiting in the Rio de Janiero, which sank …