3815718

Information

• Patent Grant
• 3815718

• References
• Source

• Patent Number

  3,815,718

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • G07F17/145 - for revolving doors or turnstiles
  • G06Q30/0284 - Time or distance
  • G07F5/22 - electrically actuated
  • Y10S194/902 - Check-operated device for controlling parking lot

• US Classifications

  • 705 - Data processing: financial, business practice, management, or cost/price determination
  • 194 - Check-actuated control mechanisms
  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems