1933589

Information

• Patent Grant
• 1933589

• References
• Source

• Patent Number

  1,933,589

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1933
  91 years ago

• CPC

  • E21C25/66 - Machines for making slits with additional arrangements for drilling
  • Y10T74/173 - Screw and nut adjusting means
  • Y10T408/6771 - with clutch means

• US Classifications

  • 074 - Machine element or mechanism
  • 173 - Tool driving or impacting
  • 175 - Boring or penetrating the earth
  • 192 - Clutches and power-stop control
  • 408 - Cutting by use of rotating axially moving tool