1981597

Information

• Patent Grant
• 1981597

• References
• Source

• Patent Number

  1,981,597

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • B63H1/04 - with rotation axis substantially at right angles to propulsive direction
  • B63B2744/00 - Stern paddle wheels

• US Classifications

  • 416 - Fluid reaction surfaces