3922016

Information

• Patent Grant
• 3922016

• References
• Source

• Patent Number

  3,922,016

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • E21D9/12 - Devices for removing or hauling away excavated material or spoil Working or loading platforms
  • E21D9/0875 - with a movable support arm carrying cutting tools for attacking the front face
  • E21D9/1093 - Devices for supporting, advancing or orientating the machine or the tool-carrier

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 280 - Land vehicles