1665869

Information

• Patent Grant
• 1665869

• References
• Source

• Patent Number

  1,665,869

• Date Filed

  Not available

• Date Issued

  Tuesday, April 10, 1928
  96 years ago

• CPC

  • B23K9/1018 - Improvements of the cos (phi) of arc welding installations

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 219 - Electric heating