1490138

Information

• Patent Grant
• 1490138

• References
• Source

• Patent Number

  1,490,138

• Date Filed

  Not available

• Date Issued

  Tuesday, April 15, 1924
  100 years ago

• CPC

  • F02M31/10 - by hot liquids
  • F02M31/0805 - Pneumatic control of the amount of exhaust gas or combustion air directed to the heat exchange surfaces
  • Y02T10/126 - Treating fuel, air or air/fuel mixture

• US Classifications

  • 261 - Gas and liquid contact apparatus
  • 236 - Automatic temperature and humidity regulation