809633

Information

• Patent Grant
• 809633

• References
• Source

• Patent Number

  809,633

• Date Filed

  Not available

• Date Issued

  Tuesday, January 9, 1906
  119 years ago

• CPC

  • E02D23/06 - bringing persons or material into or out of compressed air caissons

• US Classifications

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