3574357

Information

• Patent Grant
• 3574357

• References
• Source

• Patent Number

  3,574,357

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1971
  53 years ago

• CPC

  • E21B36/003 - Insulating arrangements
  • E21B17/04 - between rod or the like and bit or between rod and rod or the like
  • F16L59/143 - Pre-insulated pipes
  • F16L59/181 - Joints in which sealing surfaces are pressed together by means of a member

• US Classifications

  • 285 - Pipe joints or couplings
  • 138 - Pipes and tubular conduits