3855454

Information

• Patent Grant
• 3855454

• References
• Source

• Patent Number

  3,855,454

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1974
  50 years ago

• CPC

  • G06M3/022 - by subtracting
  • G07B15/02 - taking into account a variable factor such as distance or time

• US Classifications

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