3419710

Information

• Patent Grant
• 3419710

• References
• Source

• Patent Number

  3,419,710

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1968
  56 years ago

• CPC

  • G06Q20/342 - Cards defining paid or billed services or quantities
  • G06K7/088 - using magneto-sensitive switches
  • G07F7/025 - by means
  • G07F7/086 - by passive credit-cards adapted therefor

• US Classifications

  • 235 - Registers
  • 101 - Printing
  • 200 - Electricity: circuit makers and breakers
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets