2180555

Information

• Patent Grant
• 2180555

• References
• Source

• Patent Number

  2,180,555

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1939
  85 years ago

• CPC

  • B21H7/002 - Fasteners, rivets
  • B21H3/065 - Planetary thread rolling

• US Classifications

  • 072 - Metal deforming