3570297

Information

• Patent Grant
• 3570297

• References
• Source

• Patent Number

  3,570,297

• Date Filed

  Not available

• Date Issued

  Tuesday, March 16, 1971
  53 years ago

• CPC

  • B21C37/18 - conical tubes
  • B21C3/06 - with adjustable section

• US Classifications

  • 072 - Metal deforming