2820406

Information

• Patent Grant
• 2820406

• References
• Source

• Patent Number

  2,820,406

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1958
  67 years ago

• CPC

  • F24F11/025 - characterised by velocity control
  • F24F13/062 - having one or more bowls or cones diverging in the flow direction
  • Y10S454/906 - Noise inhibiting means

• US Classifications

  • 454 - Ventilation
  • 181 - Acoustics