2716025

Information

• Patent Grant
• 2716025

• References
• Source

• Patent Number

  2,716,025

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1955
  69 years ago

• CPC

  • E21D23/06 - Special mine caps or special tops of pit-props for permitting step-by-step movement
  • E21C27/124 - with rotatable cutters provided with breaking-down members
  • E21D17/0206 - Hydraulically operated extension devices

• US Classifications

  • 299 - Mining or in situ disintegration of hard material