1931145

Information

• Patent Grant
• 1931145

• References
• Source

• Patent Number

  1,931,145

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1933
  91 years ago

• CPC

  • F24D3/04 - with the water under high pressure

• US Classifications

  • 237 - Heating systems
  • 122 - Liquid heaters and vaporizers
  • 126 - Stoves and furnaces
  • 219 - Electric heating
  • 236 - Automatic temperature and humidity regulation
  • 392 - Electric resistance heating devices