1549654

Information

• Patent Grant
• 1549654

• References
• Source

• Patent Number

  1,549,654

• Date Filed

  Not available

• Date Issued

  Tuesday, August 11, 1925
  99 years ago

• CPC

  • E21C25/30 - Chain guides

• US Classifications

  • 299 - Mining or in situ disintegration of hard material