3495213

Information

• Patent Grant
• 3495213

• References
• Source

• Patent Number

  3,495,213

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1970
  55 years ago

• CPC

  • A61H3/066 - Installations on the floor
  • A61H3/061 - with electronic detecting or guiding means
  • A61H3/068 - Sticks for blind persons
  • G01S1/02 - using radio waves
  • A61H2003/065 - in the form of braille

• US Classifications

  • 340 - Communications: electrical
  • 324 - Electricity: measuring and testing
  • 379 - Telephonic communications