3438210

Information

• Patent Grant
• 3438210

• References
• Source

• Patent Number

  3,438,210

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1969
  55 years ago

• CPC

  • E21D23/08 - Advancing mechanisms
  • E21F13/10 - Anchorings for conveyors

• US Classifications

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