2904319

Information

• Patent Grant
• 2904319

• References
• Source

• Patent Number

  2,904,319

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1959
  65 years ago

• CPC

  • E21C27/124 - with rotatable cutters provided with breaking-down members
  • E21D17/003 - with essential hydraulic elements
  • E21D20/003 - Machines for drilling anchor holes and setting anchor bolts

• US Classifications

  • 299 - Mining or in situ disintegration of hard material