2137842

Information

• Patent Grant
• 2137842

• References
• Source

• Patent Number

  2,137,842

• Date Filed

  Not available

• Date Issued

  Tuesday, November 22, 1938
  86 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
  • 310 - Electrical generator or motor structure