3890822

Information

• Patent Grant
• 3890822

• References
• Source

• Patent Number

  3,890,822

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1975
  49 years ago

• CPC

  • B21C25/00 - Profiling tools for metal extruding
  • B21C23/20 - by backward extrusion
  • B21D51/36 - collapsible or like thin-walled tubes

• US Classifications

  • 072 - Metal deforming