2188925

Information

• Patent Grant
• 2188925

• References
• Source

• Patent Number

  2,188,925

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1940
  84 years ago

• CPC

  • B23K9/0358 - the backing means being a ring or sleeve

• US Classifications

  • 228 - Metal fusion bonding
  • 219 - Electric heating