3546467

Information

• Patent Grant
• 3546467

• References
• Source

• Patent Number

  3,546,467

• Date Filed

  Not available

• Date Issued

  Tuesday, December 8, 1970
  54 years ago

• CPC

  • G01S17/46 - Indirect determination of position data
  • A45B3/00 - Sticks combined with other objects
  • G09B21/007 - using both tactile and audible presentation of the information
  • Y10S135/911 - Cane for the blind
  • Y10S367/91 - Portable sonar devices

• US Classifications

  • 250 - Radiant energy
  • 135 - Tent, canopy, umbrella, or cane
  • 340 - Communications: electrical
  • 342 - Communications: directive radio wave systems and devices
  • 356 - Optics: measuring and testing
  • 367 - Communications, electrical: acoustic wave systems and devices