941869

Information

• Patent Grant
• 941869

• References
• Source

• Patent Number

  941,869

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1909
  115 years ago

• CPC

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

• US Classifications

  • 405 - Hydraulic and earth engineering