2821725

Information

• Patent Grant
• 2821725

• References
• Source

• Patent Number

  2,821,725

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1958
  66 years ago

• CPC

  • B63B22/12 - the surfacing of the buoy being assisted by a gas released or generated on submergence of the buoy
  • B63B22/10 - Water soluble or water weakened means

• US Classifications

  • 441 - Buoys, rafts, and aquatic devices
  • 116 - Signals and indicators