3375668

Information

• Patent Grant
• 3375668

• References
• Source

• Patent Number

  3,375,668

• Date Filed

  Not available

• Date Issued

  Tuesday, April 2, 1968
  56 years ago

• CPC

  • E21F13/086 - Armoured conveyors shifting devices
  • E21D23/0017 - Pile type supports
  • E21D23/0052 - with advancing shifting devices connected therewith
  • E21D23/0472 - Supports specially adapted for people walking or transporting material
  • E21D23/085 - acting on a conveyor or a guide for the mining machine
  • E21F13/066 - Scraper chain conveyors

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 299 - Mining or in situ disintegration of hard material