3743355

Information

• Patent Grant
• 3743355

• References
• Source

• Patent Number

  3,743,355

• Date Filed

  Not available

• Date Issued

  Tuesday, July 3, 1973
  51 years ago

• CPC

  • E21F7/00 - Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
  • E21C45/00 - Methods of hydraulic mining Hydraulic monitors

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 166 - Wells