875875

Information

• Patent Grant
• 875875

• References
• Source

• Patent Number

  875,875

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1908
  117 years ago

• CPC

  • E21B17/012 - with buoyancy elements
  • B63B22/00 - Buoys
  • B63B22/163 - comprising a bell or other audible signal
  • B63B2211/06 - Operation in ice-infested waters

• US Classifications

  • 441 - Buoys, rafts, and aquatic devices