1620247

Information

• Patent Grant
• 1620247

• References
• Source

• Patent Number

  1,620,247

• Date Filed

  Not available

• Date Issued

  Tuesday, March 8, 1927
  97 years ago

• CPC

  • E01C23/0825 - rotary

• US Classifications

  • 280 - Land vehicles
  • 172 - Earth working