3722846

Information

• Patent Grant
• 3722846

• References
• Source

• Patent Number

  3,722,846

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1973
  51 years ago

• CPC

  • E21D15/54 - Details of the ends of props
  • E21D17/10 - Details of mine caps for engaging the tops of pit-props, with or without retaining-plates Retaining-plates

• US Classifications

  • 248 - Supports