2650475

Information

• Patent Grant
• 2650475

• References
• Source

• Patent Number

  2,650,475

• Date Filed

  Not available

• Date Issued

  Tuesday, September 1, 1953
  71 years ago

• CPC

  • E21D17/01 - characterised by the shape of the cap
  • E21D15/43 - Details of wedges
  • E21D17/086 - or articulated type

• US Classifications

  • 405 - Hydraulic and earth engineering