3618325

Information

• Patent Grant
• 3618325

• References
• Source

• Patent Number

  3,618,325

• Date Filed

  Not available

• Date Issued

  Tuesday, November 9, 1971
  53 years ago

• CPC

  • E21D23/0454 - Trailing plates; Coal face or goaf side sprags
  • E21F15/04 - Stowing mats Goaf wire netting Partition walls

• US Classifications

  • 405 - Hydraulic and earth engineering