3731492

Information

• Patent Grant
• 3731492

• References
• Source

• Patent Number

  3,731,492

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1973
  51 years ago

• CPC

  • E02F5/22 - for making embankments for back-filling
  • E02B7/06 - Earth-fill dams Rock-fill dams
  • E02D17/18 - Making embankments

• US Classifications

  • 405 - Hydraulic and earth engineering