72022443
Jan 11, 1957
Jan 13, 1959
RESPIRATORY APPARATUS FOR UNDERWATER DIVING, COMPRISING A SELF-CONTAINED, UNDERWATER BREATHING APPARATUS AND INCLUDING A HARNESS, AN AIR SUPPLY CYLINDER OR CYLINDERS, AN AIR PRESSURE REGULATOR, AIR SUPPLY TUBES, A MOUTHPIECE AND A FACE MASK
Cordage and Fibers