3464500

Information

• Patent Grant
• 3464500

• References
• Source

• Patent Number

  3,464,500

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1969
  55 years ago

• CPC

  • E21B1/02 - Surface drives for percussion drilling
  • B25D9/265 - with arrangements for automatic stopping when the tool is lifted from the working face or suffers excessive bore resistance

• US Classifications

  • 173 - Tool driving or impacting