3105221

Information

• Patent Grant
• 3105221

• References
• Source

• Patent Number

  3,105,221

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1963
  61 years ago

• CPC

  • E04H6/42 - Devices or arrangements peculiar to garages, not covered elsewhere
  • G06M1/047 - for arithmetical operations
  • G06M1/385 - differentials
  • G08G1/14 - Indicating individual free spaces in parking areas

• US Classifications

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