1474150

Information

• Patent Grant
• 1474150

• References
• Source

• Patent Number

  1,474,150

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1923
  101 years ago

• CPC

  • H05B1/0211 - using the expansion of an electric conductive liquid

• US Classifications

  • 392 - Electric resistance heating devices
  • 200 - Electricity: circuit makers and breakers
  • 219 - Electric heating
  • 237 - Heating systems