1720452

Information

• Patent Grant
• 1720452

• References
• Source

• Patent Number

  1,720,452

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1929
  95 years ago

• CPC

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

• US Classifications

  • 416 - Fluid reaction surfaces
  • 440 - Marine propulsion