2328659

Information

• Patent Grant
• 2328659

• References
• Source

• Patent Number

  2,328,659

• Date Filed

  Not available

• Date Issued

  Tuesday, September 7, 1943
  81 years ago

• CPC

  • E04D13/0358 - the parts moving, in their own plane
  • F24F13/16 - built up of parallelly-movable plates

• US Classifications

  • 454 - Ventilation