3619542

Information

• Patent Grant
• 3619542

• References
• Source

• Patent Number

  3,619,542

• Date Filed

  Not available

• Date Issued

  Tuesday, November 9, 1971
  53 years ago

• CPC

  • B23K11/0006 - the welding zone being shielded against the influence of the surrounding atmosphere
  • B23K13/02 - Seam welding
  • B23K13/043 - Seam welding
  • B23K2201/06 - Tubes

• US Classifications

  • 219 - Electric heating