1780586

Information

• Patent Grant
• 1780586

• References
• Source

• Patent Number

  1,780,586

• Date Filed

  Not available

• Date Issued

  Tuesday, November 4, 1930
  94 years ago

• CPC

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

• US Classifications

  • 405 - Hydraulic and earth engineering