3420976

Information

• Patent Grant
• 3420976

• References
• Source

• Patent Number

  3,420,976

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1969
  57 years ago

• CPC

  • B23K13/025 - for tubes
  • B23K11/061 - for welding rectilinear seams
  • B23K13/043 - Seam welding

• US Classifications

  • 219 - Electric heating