2976693

Information

• Patent Grant
• 2976693

• References
• Source

• Patent Number

  2,976,693

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1961
  63 years ago

• CPC

  • E02B17/0845 - with inflatable clamping rings

• US Classifications

  • 405 - Hydraulic and earth engineering