1785528

Information

• Patent Grant
• 1785528

• References
• Source

• Patent Number

  1,785,528

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1930
  94 years ago

• CPC

  • B63C11/38 - with entrance above water surface

• US Classifications

  • 405 - Hydraulic and earth engineering