2640269

Information

• Patent Grant
• 2640269

• References
• Source

• Patent Number

  2,640,269

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1953
  71 years ago

• CPC

  • E21B21/08 - Controlling or monitoring pressure or flow of drilling fluid
  • G01F23/665 - using pneumatically or hydraulically actuated indicating means

• US Classifications

  • 033 - Geometrical instruments