3483728

Information

• Patent Grant
• 3483728

• References
• Source

• Patent Number

  3,483,728

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1969
  55 years ago

• CPC

  • B21C37/18 - conical tubes
  • B21C1/22 - specially adapted for making tubular articles
  • B21C3/08 - with section defined by rollers, balls, or the like
  • B21H7/007 - Taper rolling
  • B21B21/00 - Pilgrim-step tube-rolling
  • B21B23/00 - Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00

• US Classifications

  • 072 - Metal deforming