3621207

Information

• Patent Grant
• 3621207

• References
• Source

• Patent Number

  3,621,207

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • G07F17/145 - for revolving doors or turnstiles
  • G06M1/041 - for drum-type indicating means
  • G06M1/044 - with escapements
  • G07B15/00 - Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
  • G07C1/30 - Parking meters

• US Classifications

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