3847007

Information

• Patent Grant
• 3847007

• References
• Source

• Patent Number

  3,847,007

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1974
  50 years ago

• CPC

  • B21D51/36 - collapsible or like thin-walled tubes
  • B21C37/18 - conical tubes
  • B21D39/20 - with mandrels

• US Classifications

  • 072 - Metal deforming