3689250

Information

• Patent Grant
• 3689250

• References
• Source

• Patent Number

  3,689,250

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • C21C5/5211 - in an alternating current [AC] electric arc furnace
  • F27B3/085 - Arc furnaces
  • F27D3/1581 - by the use of blowers
  • Y02P10/216 - of Fe

• US Classifications

  • 075 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
  • 266 - Metallurgical apparatus
  • 373 - Industrial electric heating furnaces