The Tube | Cathode ray tube | X-ray tube | The Tube (TV series) | The Groove Tube | tube | Traveling-wave tube | Tottenham Court Road tube station | cathode ray tube | Youngstown Sheet & Tube Co. v. Sawyer | Westbourne Park tube station | Tube Tales | Torpedo tube | Shoot 'em up#Tube and rail shooters | Piccadilly Circus tube station | Peter and the Test Tube Babies | Aldwych tube station | Youngstown Sheet and Tube | Wires...and the Concept of Breathing | Tube | South Kensington tube station | Mornington Crescent tube station | Ibanez Tube Screamer | Hammersmith tube station | Golders Green tube station | Eustachian tube | Covent Garden tube station | Bond Street tube station | Bethnal Green tube station | Aldgate tube station |
1939: Hans Hass developed from the escape set a type of rebreather with its bag on his back and two breathing tubes but no backpack box.