1702558

Information

• Patent Grant
• 1702558

• References
• Source

• Patent Number

  1,702,558

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1929
  96 years ago

• CPC

  • E21F13/065 - Scrapers

• US Classifications

  • 299 - Mining or in situ disintegration of hard material