1998943

Information

• Patent Grant
• 1998943

• References
• Source

• Patent Number

  1,998,943

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1935
  90 years ago

• CPC

  • H05B1/0208 - actuated by the expansion or evaporation of a gas or liquid
  • G01K7/40 - using ionisation of gases
  • H05B1/02 - Automatic switching arrangements specially adapted to apparatus; Control of heating devices

• US Classifications

  • 219 - Electric heating
  • 236 - Automatic temperature and humidity regulation
  • 307 - Electrical transmission or interconnection systems
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 324 - Electricity: measuring and testing
  • 337 - Electricity: electrothermally or thermally actuated switches
  • 361 - Electricity: electrical systems and devices
  • 374 - Thermal measuring and testing