2221226

Information

• Patent Grant
• 2221226

• References
• Source

• Patent Number

  2,221,226

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • E02D7/28 - Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
  • E02D27/04 - in water or on quicksand

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 299 - Mining or in situ disintegration of hard material