 It consists of a gastric balloon, an esophageal balloon, and a gastric suction port.The Sengstaken-Blakemore tube was invented by Dr. Robert W. Sengstaken and Dr. Arthur H. Blakemore in 1950.1951 Stellarator

1951 Cooler

1951 Wetsuit

1951 Correction fluid

1951 Well counter

1952 Airbag

An air bag is a safety feature designed to protect automobile passengers in a head-on collision.