2798422

Information

• Patent Grant
• 2798422

• References
• Source

• Patent Number

  2,798,422

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1957
  67 years ago

• CPC

  • E06B7/06 - with one ventilation wing only

• US Classifications

  • 454 - Ventilation
  • 049 - Movable or removable closures
  • 062 - Refrigeration