2336487

Information

• Patent Grant
• 2336487

• References
• Source

• Patent Number

  2,336,487

• Date Filed

  Not available

• Date Issued

  Tuesday, December 14, 1943
  81 years ago

• CPC

  • E21C25/62 - Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 037 - Excavating
  • 125 - Stone working
  • 173 - Tool driving or impacting