2676820

Information

• Patent Grant
• 2676820

• References
• Source

• Patent Number

  2,676,820

• Date Filed

  Not available

• Date Issued

  Tuesday, April 27, 1954
  70 years ago

• CPC

  • E21B17/16 - Drill collars
  • E21B17/042 - threaded
  • F16L55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
  • Y10S285/916 - Molecular change

• US Classifications

  • 285 - Pipe joints or couplings
  • 138 - Pipes and tubular conduits
  • 464 - Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts