1218167

Information

• Patent Grant
• 1218167

• References
• Source

• Patent Number

  1,218,167

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1917
  107 years ago

• CPC

  • G01K5/28 - the material being a gas

• US Classifications

  • 374 - Thermal measuring and testing
  • 116 - Signals and indicators
  • 340 - Communications: electrical