2128172

Information

• Patent Grant
• 2128172

• References
• Source

• Patent Number

  2,128,172

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1938
  86 years ago

• CPC

  • E21D11/40 - Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
  • E21D11/07 - using brick- laying machines

• US Classifications

  • 405 - Hydraulic and earth engineering