3774502

Information

• Patent Grant
• 3774502

• References
• Source

• Patent Number

  3,774,502

• Date Filed

  Not available

• Date Issued

  Tuesday, November 27, 1973
  51 years ago

• CPC

  • E21C37/22 - Hand tools or hand-held power-operated tools specially adapted for dislodging minerals
  • B25D9/145 - for hydraulically actuated hammers having an accumulator
  • F03C1/00 - Reciprocating-piston liquid engines
  • F03C1/14 - by driving liquid of engine
  • Y10S173/04 - Liquid operated

• US Classifications

  • 091 - Motors: expansible chamber type
  • 173 - Tool driving or impacting