3536433

Information

• Patent Grant
• 3536433

• References
• Source

• Patent Number

  3,536,433

• Date Filed

  Not available

• Date Issued

  Tuesday, October 27, 1970
  54 years ago

• CPC

  • E21D23/0082 - specially adapted for vertical or steep gradient seams
  • E21D23/0409 - Aligning or guiding means for the supports or for the constitutive parts of the supports

• US Classifications

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