3321031

Information

• Patent Grant
• 3321031

• References
• Source

• Patent Number

  3,321,031

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1967
  57 years ago

• CPC

  • A01B61/046 - the device including an energy accumulator for restoring the tool to its working position
  • A01B35/08 - with rigid tools

• US Classifications

  • 172 - Earth working