363419

Information

• Patent Grant
• 363419

• References
• Source

• Patent Number

  363,419

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1887
  138 years ago

• CPC

  • E21D1/16 - by petrification

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 052 - Static structures