410502

Information

• Patent Grant
• 410502

• References
• Source

• Patent Number

  410,502

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1889
  135 years ago

• CPC

  • G01P13/0033 - with electrical coupling to the indicating device
  • Y10S193/02 - Indicators, safety devices and signals

• US Classifications

  • 340 - Communications: electrical
  • 109 - Safes, bank protection, or a related device
  • 193 - Conveyors, chutes, skids, guides, and ways
  • 200 - Electricity: circuit makers and breakers