3670140

Information

• Patent Grant
• 3670140

• References
• Source

• Patent Number

  3,670,140

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1972
  52 years ago

• CPC

  • B23K35/0255 - for use in welding
  • B23K9/0203 - Inserts
  • B23K9/0288 - for welding of tubes to tube plates
  • B23K33/004 - Filling of continuous seams
  • F16L41/084 - Soldered joints
  • Y10T29/49373 - Tube joint and tube plate structure

• US Classifications

  • 219 - Electric heating
  • 029 - Metal working
  • 228 - Metal fusion bonding
  • 285 - Pipe joints or couplings