3852972

Information

• Patent Grant
• 3852972

• References
• Source

• Patent Number

  3,852,972

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1974
  50 years ago

• CPC

  • E02F5/109 - using rotating digging elements
  • E02F5/04 - with digging screws
  • E02F5/104 - for burying conduits or cables in trenches under water

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 037 - Excavating