3030087

Information

• Patent Grant
• 3030087

• References
• Source

• Patent Number

  3,030,087

• Date Filed

  Not available

• Date Issued

  Tuesday, April 17, 1962
  62 years ago

• CPC

  • E21C27/46 - by percussed planing means

• US Classifications

  • 299 - Mining or in situ disintegration of hard material