3857356

Information

• Patent Grant
• 3857356

• References
• Source

• Patent Number

  3,857,356

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  50 years ago

• CPC

  • B63H16/04 - Oars Sculls Paddles Poles
  • B63H16/107 - by placing the fulcrum outside the segment defined by handgrip and blade

• US Classifications

  • 440 - Marine propulsion
  • 416 - Fluid reaction surfaces