3578021

Information

• Patent Grant
• 3578021

• References
• Source

• Patent Number

  3,578,021

• Date Filed

  Not available

• Date Issued

  Tuesday, May 11, 1971
  54 years ago

• CPC

  • F16L29/00 - Joints with fluid cut-off means
  • F04D15/0077 - Safety measures
  • F04D15/0083 - Protection against sudden pressure change
  • Y10T137/7014 - Telescopic well casing
  • Y10T137/7854 - In couplings for coaxial conduits, e.g., drill pipe check valves

• US Classifications

  • 137 - Fluid handling