3567912

Information

• Patent Grant
• 3567912

• References
• Source

• Patent Number

  3,567,912

• Date Filed

  Not available

• Date Issued

  Tuesday, March 2, 1971
  54 years ago

• CPC

  • G07F7/02 - by keys or other credit registering devices
  • G06M1/10 - by electric or magnetic means
  • G06M1/38 - for varying ratio of drive or transfer mechanism
  • G06Q20/343 - Cards including a counter
  • G07B15/06 - Arrangements for road pricing or congestion charging of vehicles or vehicle users
  • G07C1/30 - Parking meters
  • G07F17/145 - for revolving doors or turnstiles

• US Classifications

  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems
  • 340 - Communications: electrical