3544166

Information

• Patent Grant
• 3544166

• References
• Source

• Patent Number

  3,544,166

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1970
  54 years ago

• CPC

  • E21C35/18 - Mining picks Holders therefor
  • E21C35/1933 - the picks having a cylindrical shank
  • E21C35/1936 - the picks having a square- or rectangular-section shank
  • E21C2035/1826 - characterised by adaptations to use an extraction tool

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 037 - Excavating