3369476

Information

• Patent Grant
• 3369476

• References
• Source

• Patent Number

  3,369,476

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1968
  57 years ago

• CPC

  • A62B13/00 - Special devices for ventilating gasproof shelters
  • F16K17/006 - specially adapted for shelters
  • F16L55/10 - Means for stopping flow from or in pipes or hoses
  • Y10S454/902 - Air raid shelter ventilation
  • Y10T137/7785 - Valve closes in response to excessive flow

• US Classifications

  • 454 - Ventilation
  • 137 - Fluid handling