1388558

Information

• Patent Grant
• 1388558

• References
• Source

• Patent Number

  1,388,558

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1921
  103 years ago

• CPC

  • F16L51/005 - for concrete pipe-lines

• US Classifications

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