3148917

Information

• Patent Grant
• 3148917

• References
• Source

• Patent Number

  3,148,917

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1964
  60 years ago

• CPC

  • E01H5/094 - about vertical or substantially vertical axises

• US Classifications

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