3807458

Information

• Patent Grant
• 3807458

• References
• Source

• Patent Number

  3,807,458

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1974
  50 years ago

• CPC

  • F16L59/024 - composed of two half sleeves
  • F16L1/026 - in or on a frozen surface
  • Y10S138/09 - Cellular

• US Classifications

  • 138 - Pipes and tubular conduits
  • 264 - Plastic and nonmetallic article shaping or treating: processes