2172715

Information

• Patent Grant
• 2172715

• References
• Source

• Patent Number

  2,172,715

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1939
  85 years ago

• CPC

  • E04B1/7015 - by heating the ambient air

• US Classifications

  • 126 - Stoves and furnaces
  • 110 - Furnaces