3333896

Information

• Patent Grant
• 3333896

• References
• Source

• Patent Number

  3,333,896

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1967
  57 years ago

• CPC

  • E21F5/10 - Devices for rock dusting

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 169 - Fire extinguishers
  • 454 - Ventilation