3832940

Information

• Patent Grant
• 3832940

• References
• Source

• Patent Number

  3,832,940

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1974
  50 years ago

• CPC

  • F24F13/15 - with parallel simultaneously tiltable lamellae
  • A62C2/06 - Physical fire-barriers
  • F24F13/1406 - characterised by sealing means
  • Y10T137/8745 - Including rigid plate with flexible or resilient seal

• US Classifications

  • 454 - Ventilation
  • 049 - Movable or removable closures
  • 137 - Fluid handling