3717020

Information

• Patent Grant
• 3717020

• References
• Source

• Patent Number

  3,717,020

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1973
  51 years ago

• CPC

  • B21D3/08 - which move in an orbit without rotating round the work

• US Classifications

  • 072 - Metal deforming