2213684

Information

• Patent Grant
• 2213684

• References
• Source

• Patent Number

  2,213,684

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1940
  84 years ago

• CPC

  • E21D9/0875 - with a movable support arm carrying cutting tools for attacking the front face

• US Classifications

  • 414 - Material or article handling