3155139

Information

• Patent Grant
• 3155139

• References
• Source

• Patent Number

  3,155,139

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1964
  60 years ago

• CPC

  • B21D9/07 - with one or more swinging forming members engaging tube ends only
  • B21D9/055 - Construction of forming members having more than one groove

• US Classifications

  • 072 - Metal deforming