3857249

Information

• Patent Grant
• 3857249

• References
• Source

• Patent Number

  3,857,249

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • B63B9/00 - Methods of designing, building, maintaining, converting, refitting, repairing, or determining properties of vessels, not otherwise provided for
  • B63B17/0018 - Arrangements or devices specially adapted for facilitating access to underwater elements
  • B63B43/16 - Temporary equipment for stopping leaks
  • B63C11/52 - Tools specially adapted for working underwater, not otherwise provided for
  • B63B2009/008 - Methods for repairing hulls or structural elements of ships or other waterborne vessels

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 114 - Ships