3693721

Information

• Patent Grant
• 3693721

• References
• Source

• Patent Number

  3,693,721

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1972
  52 years ago

• CPC

  • A01D25/048 - with endless chains

• US Classifications

  • 171 - Unearthing plants or buried objects