2997887

Information

• Patent Grant
• 2997887

• References
• Source

• Patent Number

  2,997,887

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1961
  63 years ago

• CPC

  • F04B47/02 - the driving mechanisms being situated at ground level
  • Y10T74/18182 - Pump jack type
  • Y10T74/2154 - Counterbalanced

• US Classifications

  • 074 - Machine element or mechanism