1799039

Information

• Patent Grant
• 1799039

• References
• Source

• Patent Number

  1,799,039

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1931
  94 years ago

• CPC

  • F28D21/0008 - Air heaters
  • Y10S165/308 - Coaxial impellers

• US Classifications

  • 165 - Heat exchange
  • 126 - Stoves and furnaces