3774687

Information

• Patent Grant
• 3774687

• References
• Source

• Patent Number

  3,774,687

• Date Filed

  Not available

• Date Issued

  Tuesday, November 27, 1973
  51 years ago

• CPC

  • A01B33/146 - the rotating shaft being oriented vertically or steeply inclined

• US Classifications

  • 172 - Earth working