1801919

Information

• Patent Grant
• 1801919

• References
• Source

• Patent Number

  1,801,919

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  94 years ago

• CPC

  • F02M31/081 - Manual switching of the fluids directed to the heat exchange surfaces
  • F02M31/08 - the gases being exhaust gases
  • Y02T10/126 - Treating fuel, air or air/fuel mixture

• US Classifications

  • 123 - Internal-combustion engines