2743830

Information

• Patent Grant
• 2743830

• References
• Source

• Patent Number

  2,743,830

• Date Filed

  Not available

• Date Issued

  Tuesday, May 1, 1956
  68 years ago

• CPC

  • E21D1/03 - mechanically
  • E21F13/04 - Transport of mined material in gravity inclines in staple or inclined shafts

• US Classifications

  • 414 - Material or article handling