2091980

Information

• Patent Grant
• 2091980

• References
• Source

• Patent Number

  2,091,980

• Date Filed

  Not available

• Date Issued

  Tuesday, September 7, 1937
  87 years ago

• CPC

  • C21D9/677 - Arrangements of heating devices

• US Classifications

  • 432 - Heating
  • 126 - Stoves and furnaces
  • 266 - Metallurgical apparatus