434501

Information

• Patent Grant
• 434501

• References
• Source

• Patent Number

  434,501

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1890
  134 years ago

• CPC

  • G01R11/46 - Electrically-operated clockwork meters Oscillatory meters Pendulum meters

• US Classifications

  • 324 - Electricity: measuring and testing