3857590

Information

• Patent Grant
• 3857590

• References
• Source

• Patent Number

  3,857,590

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • F24F13/0209 - characterised by their connecting mens
  • F16L13/00 - Non-disconnectible pipe-joints
  • F16L37/084 - combined with automatic locking
  • F16L59/18 - adapted for joints
  • F16L59/188 - Couplings of the quick-acting type
  • F24F13/0218 - Flexible soft ducts
  • F24F13/0263 - Insulation for air ducts
  • Y10S285/921 - Snap-fit

• US Classifications

  • 285 - Pipe joints or couplings
  • 138 - Pipes and tubular conduits