2227889

Information

• Patent Grant
• 2227889

• References
• Source

• Patent Number

  2,227,889

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1941
  83 years ago

• CPC

  • E21B43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
  • Y10T74/20606 - Swing posts

• US Classifications

  • 074 - Machine element or mechanism