2614807

Information

• Patent Grant
• 2614807

• References
• Source

• Patent Number

  2,614,807

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1952
  72 years ago

• CPC

  • E21B7/025 - Rock drills
  • E21D9/122 - Working or loading platforms

• US Classifications

  • 248 - Supports
  • 175 - Boring or penetrating the earth
  • 182 - Fire escape, ladder, or scaffold