694939

Information

• Patent Grant
• 694939

• References
• Source

• Patent Number

  694,939

• Date Filed

  Not available

• Date Issued

  Tuesday, March 11, 1902
  122 years ago

• CPC

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

• US Classifications

  • 405 - Hydraulic and earth engineering