396462

Information

• Patent Grant
• 396462

• References
• Source

• Patent Number

  396,462

• Date Filed

  Not available

• Date Issued

  Tuesday, January 22, 1889
  136 years ago

• CPC

  • E21C25/62 - Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine
  • Y10T74/1616 - Cyclical displacement responsive to the alternating-motion
  • Y10T74/165 - Driving lever with adjustable pivot point

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 074 - Machine element or mechanism
  • 173 - Tool driving or impacting