157969

Information

• Patent Grant
• 157969

• References
• Source

• Patent Number

  157,969

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1874
  150 years ago

• CPC

  • E21B19/083 - Cam, rack or like feed mechanisms
  • Y10T74/1616 - Cyclical displacement responsive to the alternating-motion
  • Y10T74/18048 - Rotary to reciprocating and intermittent rotary
  • Y10T74/18752 - Manually driven
  • Y10T74/19674 - Spur and bevel

• US Classifications

  • 074 - Machine element or mechanism