3804969

Information

• Patent Grant
• 3804969

• References
• Source

• Patent Number

  3,804,969

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1974
  50 years ago

• CPC

  • H05B3/023 - the current passing through the material to be heated
  • F27B3/085 - Arc furnaces
  • F27B3/12 - Working chambers or casings Supports therefor
  • F27D1/16 - Making or repairing linings increasing the durability of linings or breaking away linings
  • F27D2001/161 - Hot repair

• US Classifications

  • 373 - Industrial electric heating furnaces
  • 266 - Metallurgical apparatus