1388698

Information

• Patent Grant
• 1388698

• References
• Source

• Patent Number

  1,388,698

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1921
  103 years ago

• CPC

  • E21D11/12 - Temporary supports for use during building Accessories

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 299 - Mining or in situ disintegration of hard material