3516448

Information

• Patent Grant
• 3516448

• References
• Source

• Patent Number

  3,516,448

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1970
  54 years ago

• CPC

  • E21B17/08 - Casing joints
  • E03B3/20 - of elements of special shape
  • E21B17/00 - Drilling rods or pipes Flexible drill strings Kellies Drill collars Sucker rods; Cables Casings Tubings
  • E21B17/046 - with ribs, pins or jaws, and complementary grooves or the like
  • E21B43/086 - Screens with preformed openings
  • E21B43/088 - Wire screens
  • F16L9/16 - wound from sheets or strips, with or without reinforcement
  • F16L37/088 - by means of a split elastic ring

• US Classifications

  • 138 - Pipes and tubular conduits
  • 156 - Adhesive bonding and miscellaneous chemical manufacture