3643853

Information

• Patent Grant
• 3643853

• References
• Source

• Patent Number

  3,643,853

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1972
  53 years ago

• CPC

  • B23K9/0352 - the backing means being movable during the welding operation

• US Classifications

  • 228 - Metal fusion bonding
  • 219 - Electric heating