3355213

Information

• Patent Grant
• 3355213

• References
• Source

• Patent Number

  3,355,213

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1967
  57 years ago

• CPC

  • E21D23/0052 - with advancing shifting devices connected therewith
  • E21C35/20 - General features of equipment for removal of chippings
  • E21D23/0047 - without essential shifting devices
  • E21F13/086 - Armoured conveyors shifting devices

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 198 - Conveyors: power-driven
  • 405 - Hydraulic and earth engineering