20939

Information

• Patent Grant
• 20939

• References
• Source

• Patent Number

  20,939

• Date Filed

  Not available

• Date Issued

  Tuesday, July 20, 1858
  166 years ago

• CPC

  • F28F9/22 - Arrangements for directing heat-exchange media into successive compartments
  • Y10S165/405 - Extending in a longitudinal direction

• US Classifications

  • 165 - Heat exchange
  • 237 - Heating systems