3328040

Information

• Patent Grant
• 3328040

• References
• Source

• Patent Number

  3,328,040

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1967
  57 years ago

• CPC

  • E21B33/06 - Blow-out preventers, i.e. apparatus closing around a drill pipe
  • E21B33/08 - Wipers Oil savers
  • F16J15/185 - with continuous adjustment of the compression of the packing

• US Classifications

  • 277 - Seal for a joint or juncture