2729946

Information

• Patent Grant
• 2729946

• References
• Source

• Patent Number

  2,729,946

• Date Filed

  Not available

• Date Issued

  Tuesday, January 10, 1956
  69 years ago

• CPC

  • E21D15/586 - the props being pre-loaded

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 414 - Material or article handling