2104579

Information

• Patent Grant
• 2104579

• References
• Source

• Patent Number

  2,104,579

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1938
  87 years ago

• CPC

  • E21C37/06 - by making use of hydraulic or pneumatic pressure in a borehole

• US Classifications

  • 299 - Mining or in situ disintegration of hard material