2720576

Information

• Patent Grant
• 2720576

• References
• Source

• Patent Number

  2,720,576

• Date Filed

  Not available

• Date Issued

  Tuesday, October 11, 1955
  69 years ago

• CPC

  • H01F30/14 - for changing the number of phases
  • B21J17/02 - electrically heated

• US Classifications

  • 219 - Electric heating