471397

Information

• Patent Grant
• 471397

• References
• Source

• Patent Number

  471,397

• Date Filed

  Not available

• Date Issued

  Tuesday, March 22, 1892
  132 years ago

• CPC

  • E21B43/34 - Arrangements for separating materials produced by the well
  • Y10T137/3043 - Successively opened valves
  • Y10T137/7323 - By float

• US Classifications

  • 137 - Fluid handling