2614822

Information

• Patent Grant
• 2614822

• References
• Source

• Patent Number

  2,614,822

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1952
  72 years ago

• CPC

  • E21C27/122 - with breaking-down members having a striking action

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 091 - Motors: expansible chamber type