3845839

Information

• Patent Grant
• 3845839

• References
• Source

• Patent Number

  3,845,839

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1974
  50 years ago

• CPC

  • B63H23/36 - Shaft tubes
  • B63H21/305 - with passive vibration damping
  • B63H2023/327 - Sealings specially adapted for propeller shafts or stern tubes

• US Classifications

  • 440 - Marine propulsion
  • 114 - Ships
  • 123 - Internal-combustion engines
  • 181 - Acoustics
  • 290 - Prime-mover dynamo plants