1478163

Information

• Patent Grant
• 1478163

• References
• Source

• Patent Number

  1,478,163

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1923
  101 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