2155713

Information

• Patent Grant
• 2155713

• References
• Source

• Patent Number

  2,155,713

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1939
  85 years ago

• CPC

  • E01B27/14 - Manual tools or hand-held power tools therefor

• US Classifications

  • 104 - Railways
  • 173 - Tool driving or impacting
  • 299 - Mining or in situ disintegration of hard material