1379928

Information

• Patent Grant
• 1379928

• References
• Source

• Patent Number

  1,379,928

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1921
  103 years ago

• CPC

  • B63C11/38 - with entrance above water surface

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 037 - Excavating
  • 114 - Ships