3780368

Information

• Patent Grant
• 3780368

• References
• Source

• Patent Number

  3,780,368

• Date Filed

  Not available

• Date Issued

  Tuesday, December 18, 1973
  51 years ago

• CPC

  • G08B13/2414 - using inductive tags
  • B07C3/12 - using electric or electronic detecting means
  • B61L25/041 - using reflecting tags
  • G01S13/74 - Systems using reradiation of radio waves
  • G01V15/00 - Tags attached to, or associated with, an object, in order to enable detection of the object
  • G07C9/00111 - the pass performing a presence indicating function
  • G08B13/2417 - having a radio frequency identification chip
  • G08B13/2431 - Tag circuit details
  • G08B13/2462 - Asset location systems combined with EAS
  • G06K2017/0048 - Grouping, sorting, transporting, distributing documents or goods

• US Classifications

  • 340 - Communications: electrical