3177951

Information

• Patent Grant
• 3177951

• References
• Source

• Patent Number

  3,177,951

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1965
  59 years ago

• CPC

  • A01B63/111 - regulating working depth of implements
  • A01B23/043 - specially adapted for harrows with non-rotating tools
  • A01B35/12 - with spring tools or with resiliently-or flexibly-attached rigid tools

• US Classifications

  • 172 - Earth working
  • 171 - Unearthing plants or buried objects