3768267

Information

• Patent Grant
• 3768267

• References
• Source

• Patent Number

  3,768,267

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1973
  51 years ago

• CPC

  • E21D11/40 - Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
  • E21D11/05 - using compressible insertions

• US Classifications

  • 405 - Hydraulic and earth engineering