3759285

Information

• Patent Grant
• 3759285

• References
• Source

• Patent Number

  3,759,285

• Date Filed

  Not available

• Date Issued

  Tuesday, September 18, 1973
  51 years ago

• CPC

  • E03F5/021 - Connection of sewer pipes to manhole shaft
  • B28B23/0043 - with gaskets or sealing elements
  • E03F5/02 - Manhole shafts or other inspection chambers snow-filling openings accessories
  • F16L5/02 - Sealing
  • F16L21/02 - with elastic sealing rings between pipe and sleeve or between pipe and socket
  • Y10T137/6991 - Ground supporting enclosure

• US Classifications

  • 137 - Fluid handling
  • 285 - Pipe joints or couplings