3867831

Information

• Patent Grant
• 3867831

• References
• Source

• Patent Number

  3,867,831

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1975
  50 years ago

• CPC

  • B21K1/14 - fittings
  • B21C37/292 - Forming collars by drawing or pushing a rigid forming tool through an opening in the tube wall
  • B21K21/00 - Making hollow articles not covered by a single preceding sub-group
  • Y10T29/49442 - T-shaped fitting making

• US Classifications

  • 072 - Metal deforming
  • 029 - Metal working