870218

Information

• Patent Grant
• 870218

• References
• Source

• Patent Number

  870,218

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1907
  117 years ago

• CPC

  • B23P15/005 - keys
  • Y10T29/442 - of key article

• US Classifications

  • 029 - Metal working