2812641

Information

• Patent Grant
• 2812641

• References
• Source

• Patent Number

  2,812,641

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1957
  67 years ago

• CPC

  • B63C11/38 - with entrance above water surface
  • B63B17/0018 - Arrangements or devices specially adapted for facilitating access to underwater elements
  • F16L1/26 - Repairing or joining pipes on or under water
  • B63C11/40 - adapted to specific work

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 138 - Pipes and tubular conduits
  • 219 - Electric heating