1963996

Information

• Patent Grant
• 1963996

• References
• Source

• Patent Number

  1,963,996

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1934
  90 years ago

• CPC

  • B63C11/38 - with entrance above water surface

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 037 - Excavating