3402776

Information

• Patent Grant
• 3402776

• References
• Source

• Patent Number

  3,402,776

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1968
  56 years ago

• CPC

  • E21C37/22 - Hand tools or hand-held power-operated tools specially adapted for dislodging minerals
  • B25D17/06 - Hammer pistons Anvils; Guide-sleeves for pistons

• US Classifications

  • 173 - Tool driving or impacting