3322157

Information

• Patent Grant
• 3322157

• References
• Source

• Patent Number

  3,322,157

• Date Filed

  Not available

• Date Issued

  Tuesday, May 30, 1967
  58 years ago

• CPC

  • F16L58/06 - by cement, concrete, or the like
  • F16L9/153 - comprising only layers of metal and concrete with or without reinforcement

• US Classifications

  • 138 - Pipes and tubular conduits