3131683

Information

• Patent Grant
• 3131683

• References
• Source

• Patent Number

  3,131,683

• Date Filed

  Not available

• Date Issued

  Tuesday, May 5, 1964
  60 years ago

• CPC

  • E01C23/0913 - with non-powered tools

• US Classifications

  • 125 - Stone working
  • 030 - Cutlery
  • 172 - Earth working