3744806

Information

• Patent Grant
• 3744806

• References
• Source

• Patent Number

  3,744,806

• Date Filed

  Not available

• Date Issued

  Tuesday, July 10, 1973
  51 years ago

• CPC

  • F16L41/002 - of concrete, cement or asbestos-cement
  • E03F5/021 - Connection of sewer pipes to manhole shaft
  • F16L5/025 - the pipe being movable
  • F16L5/10 - by using sealing rings or sleeves only
  • F16L21/03 - placed in the socket before connection
  • F16L41/088 - fixed using an elastic grommet between the extremity of the tube and the wall

• US Classifications

  • 277 - Seal for a joint or juncture
  • 052 - Static structures
  • 285 - Pipe joints or couplings