3881557

Information

• Patent Grant
• 3881557

• References
• Source

• Patent Number

  3,881,557

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1975
  49 years ago

• CPC

  • E02D7/10 - with pressure-actuated hammer
  • Y10S173/01 - Operable submerged in liquid

• US Classifications

  • 173 - Tool driving or impacting
  • 092 - Expansible chamber devices