2488074

Information

• Patent Grant
• 2488074

• References
• Source

• Patent Number

  2,488,074

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1949
  75 years ago

• CPC

  • E21D5/012 - Use of fluid-tight or anti-friction material on outside of, or between, lining layers

• US Classifications

  • 405 - Hydraulic and earth engineering