3423563

Information

• Patent Grant
• 3423563

• References
• Source

• Patent Number

  3,423,563

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1969
  55 years ago

• CPC

  • B23K9/035 - with backing means disposed under the seam
  • B23K9/0052 - Welding of pipe panels
  • B23K9/18 - Submerged-arc welding

• US Classifications

  • 219 - Electric heating