3516348

Information

• Patent Grant
• 3516348

• References
• Source

• Patent Number

  3,516,348

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1970
  54 years ago

• CPC

  • A62B13/00 - Special devices for ventilating gasproof shelters
  • Y10S454/902 - Air raid shelter ventilation
  • Y10T137/7869 - Biased open

• US Classifications

  • 454 - Ventilation
  • 137 - Fluid handling