3689941

Information

• Patent Grant
• 3689941

• References
• Source

• Patent Number

  3,689,941

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • F28F21/082 - from steel or ferrous alloys
  • B21D53/02 - heat exchangers or parts thereof
  • B23K1/0012 - Brazing heat exchangers
  • B23K35/004 - at least one of the workpieces being of a metal of the iron group
  • C23C2/10 - Lead or alloys based thereon
  • F28D1/03 - with plate-like or laminated conduits
  • F28F9/18 - by welding
  • Y10S29/037 - Stamping with other step
  • Y10T29/49393 - with metallurgical bonding
  • Y10T29/49982 - Coating

• US Classifications

  • 228 - Metal fusion bonding
  • 029 - Metal working