3521596

Information

• Patent Grant
• 3521596

• References
• Source

• Patent Number

  3,521,596

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1970
  54 years ago

• CPC

  • G01C15/08 - Plumbing or registering staffs or markers over ground marks
  • B63B51/02 - with anchored light-ships by use of lighthouses
  • E01F9/615 - illuminated
  • E01F9/654 - in the form of three-dimensional bodies
  • E01F9/688 - Free-standing bodies

• US Classifications

  • 116 - Signals and indicators
  • 404 - Road structure, process, or apparatus
  • 441 - Buoys, rafts, and aquatic devices
  • D10 - Measuring, testing, or signalling instruments