3056390

Information

• Patent Grant
• 3056390

• References
• Source

• Patent Number

  3,056,390

• Date Filed

  Not available

• Date Issued

  Tuesday, October 2, 1962
  62 years ago

• CPC

  • B25D9/10 - comprising a built-in internal-combustion engine
  • E21B6/08 - Separate drives for percussion and rotation
  • E21C3/18 - directly by a piston of an internal-combustion engine

• US Classifications

  • 173 - Tool driving or impacting
  • 123 - Internal-combustion engines