3758940

Information

• Patent Grant
• 3758940

• References
• Source

• Patent Number

  3,758,940

• Date Filed

  Not available

• Date Issued

  Tuesday, September 18, 1973
  51 years ago

• CPC

  • B28B21/56 - incorporating reinforcements or inserts
  • B28B21/60 - prestressed reinforcements
  • B28B21/62 - circumferential laterally tensioned
  • F16L9/153 - comprising only layers of metal and concrete with or without reinforcement
  • F16L17/10 - the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
  • F16L25/0027 - Joints for pipes made of reinforced concrete
  • Y10T29/49888 - Subsequently coating

• US Classifications

  • 029 - Metal working
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus