2781447

Information

• Patent Grant
• 2781447

• References
• Source

• Patent Number

  2,781,447

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1957
  68 years ago

• CPC

  • G06F7/4981 - Adding; Subtracting
  • G11C19/202 - with vacuum tubes
  • H03K23/82 - using gas-filled tubes

• US Classifications

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