2475389

Information

• Patent Grant
• 2475389

• References
• Source

• Patent Number

  2,475,389

• Date Filed

  Not available

• Date Issued

  Tuesday, July 5, 1949
  75 years ago

• CPC

  • F16L41/028 - of concrete, cement or asbestos-cement
  • F16L11/02 - made of fibres or threads

• US Classifications

  • 138 - Pipes and tubular conduits