2302034

Information

• Patent Grant
• 2302034

• References
• Source

• Patent Number

  2,302,034

• Date Filed

  Not available

• Date Issued

  Tuesday, November 17, 1942
  82 years ago

• CPC

  • E21C29/20 - with safety devices operating in the event of breakage of the cable or chain

• US Classifications

  • 299 - Mining or in situ disintegration of hard material