3461957

Information

• Patent Grant
• 3461957

• References
• Source

• Patent Number

  3,461,957

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1969
  55 years ago

• CPC

  • E21B33/037 - Protective housing therefor
  • E21B33/0375 - Corrosion protection means

• US Classifications

  • 166 - Wells