3414714

Information

• Patent Grant
• 3414714

• References
• Source

• Patent Number

  3,414,714

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1968
  56 years ago

• CPC

  • G07F7/02 - by keys or other credit registering devices
  • G06C27/00 - Computing machines characterised by the structural interrelation of their functional units
  • G06K19/067 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements
  • G06Q20/343 - Cards including a counter
  • G07G1/0054 - with control of supplementary check-parameters

• US Classifications

  • 340 - Communications: electrical
  • 235 - Registers