921823

Information

• Patent Grant
• 921823

• References
• Source

• Patent Number

  921,823

• Date Filed

  Not available

• Date Issued

  Tuesday, May 18, 1909
  115 years ago

• CPC

  • B63H1/34 - of endless-track type
  • B63H2001/346 - having paddles movably mounted on the track or on track members

• US Classifications

  • 440 - Marine propulsion
  • 198 - Conveyors: power-driven