1519731

Information

• Patent Grant
• 1519731

• References
• Source

• Patent Number

  1,519,731

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1924
  100 years ago

• CPC

  • E21C29/08 - Anchoring arrangements

• US Classifications

  • 248 - Supports
  • 299 - Mining or in situ disintegration of hard material