3173356

Information

• Patent Grant
• 3173356

• References
• Source

• Patent Number

  3,173,356

• Date Filed

  Not available

• Date Issued

  Tuesday, March 16, 1965
  60 years ago

• CPC

  • F16K17/006 - specially adapted for shelters
  • A62B13/00 - Special devices for ventilating gasproof shelters
  • F16K1/2007 - specially adapted operating means therefor
  • F16K1/2021 - with a plurality of valve members
  • F16K1/2028 - Details of bearings for the axis of rotation
  • Y10S454/902 - Air raid shelter ventilation

• US Classifications

  • 454 - Ventilation