2678636

Information

• Patent Grant
• 2678636

• References
• Source

• Patent Number

  2,678,636

• Date Filed

  Not available

• Date Issued

  Tuesday, May 18, 1954
  70 years ago

• CPC

  • E21C3/24 - directly by air, steam, or gas pressure
  • Y10T74/1527 - Screw and nut devices

• US Classifications

  • 173 - Tool driving or impacting
  • 074 - Machine element or mechanism
  • 091 - Motors: expansible chamber type