3600899

Information

• Patent Grant
• 3600899

• References
• Source

• Patent Number

  3,600,899

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1971
  53 years ago

• CPC

  • E21D9/04 - Driving tunnels or galleries through loose materials Apparatus therefor not otherwise provided for

• US Classifications

  • 405 - Hydraulic and earth engineering