2151939

Information

• Patent Grant
• 2151939

• References
• Source

• Patent Number

  2,151,939

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1939
  86 years ago

• CPC

  • B63H1/12 - with rotation axis substantially in propulsive direction
  • B63H2001/122 - Single or multiple threaded helicoidal screws, or the like, comprising foils extending over a substantial angle; Archimedean screws
  • B63H2005/005 - Front propulsors

• US Classifications

  • 416 - Fluid reaction surfaces