3902553

Information

• Patent Grant
• 3902553

• References
• Source

• Patent Number

  3,902,553

• Date Filed

  Not available

• Date Issued

  Tuesday, September 2, 1975
  49 years ago

• CPC

  • E21B33/035 - specially adapted for underwater installations
  • B63B9/065 - for floating offshore platforms
  • E21B7/132 - from underwater buoyant support
  • E21B19/14 - Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected Handling between storage place and borehole
  • E21B19/143 - specially adapted for underwater drilling
  • E21B33/037 - Protective housing therefor
  • B63B2009/067 - for assembling offshore structures

• US Classifications

  • 166 - Wells
  • 175 - Boring or penetrating the earth