3393525

Information

• Patent Grant
• 3393525

• References
• Source

• Patent Number

  3,393,525

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1968
  56 years ago

• CPC

  • B63C11/38 - with entrance above water surface

• US Classifications

  • 405 - Hydraulic and earth engineering