370400

Information

• Patent Grant
• 370400

• References
• Source

• Patent Number

  370,400

• Date Filed

  Not available

• Date Issued

  Tuesday, September 27, 1887
  137 years ago

• CPC

  • G04B47/008 - combined with a thermometer

• US Classifications

  • 374 - Thermal measuring and testing
  • 368 - Horology: time measuring systems or devices
  • D10 - Measuring, testing, or signalling instruments