1378884

Information

• Patent Grant
• 1378884

• References
• Source

• Patent Number

  1,378,884

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1921
  104 years ago

• CPC

  • G01R11/66 - Circuitry

• US Classifications

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