1930 – Diving Apparatus – Emil Kulik (American)
An Armored Sea-Monster This machine is not really a sea-monster, but the newest thing in diving 'bells', although in this case the operation and construction resembles a miniature submarine. It was invented by Emil Kulik, 52-year-old former sea captain and naval officer, Brooklyn, N.Y. It is plentifully supplied with windows, the driver sitting within and …