1990468

Information

• Patent Grant
• 1990468

• References
• Source

• Patent Number

  1,990,468

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  89 years ago

• CPC

  • F28D1/024 - with an air driving element
  • Y10S165/109 - with by-pass of heat exchanger or heat exchanger section

• US Classifications

  • 165 - Heat exchange
  • 454 - Ventilation