2669640

Information

• Patent Grant
• 2669640

• References
• Source

• Patent Number

  2,669,640

• Date Filed

  Not available

• Date Issued

  Tuesday, February 16, 1954
  71 years ago

• CPC

  • B23K9/188 - making use of several electrodes
  • B23K9/0678 - Ionization of the arc gap by means of an auxiliary arc
  • B23K9/125 - Feeding of electrodes

• US Classifications

  • 219 - Electric heating
  • 148 - Metal treatment