3808821

Information

• Patent Grant
• 3808821

• References
• Source

• Patent Number

  3,808,821

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  50 years ago

• CPC

  • E02D5/665 - for making piles
  • E02D5/385 - with removal of the outer mould-pipes

• US Classifications

  • 405 - Hydraulic and earth engineering