3730961

Information

• Patent Grant
• 3730961

• References
• Source

• Patent Number

  3,730,961

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1973
  51 years ago

• CPC

  • H05B7/085 - mainly consisting of carbon
  • C21C5/5217 - equipped with burners or devices for injecting gas
  • F27D11/08 - Heating by electric discharge
  • C21C2250/06 - Hollow electrode
  • Y02P10/143 - Methane [CH4]
  • Y02P10/216 - of Fe

• US Classifications

  • 373 - Industrial electric heating furnaces