3831422

Information

• Patent Grant
• 3831422

• References
• Source

• Patent Number

  3,831,422

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1974
  50 years ago

• CPC

  • B21K1/14 - fittings
  • Y10T29/49442 - T-shaped fitting making

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working