2807452

Information

• Patent Grant
• 2807452

• References
• Source

• Patent Number

  2,807,452

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1957
  67 years ago

• CPC

  • E21C25/36 - Couplings for links

• US Classifications

  • 299 - Mining or in situ disintegration of hard material