1438591

Information

• Patent Grant
• 1438591

• References
• Source

• Patent Number

  1,438,591

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1922
  102 years ago

• CPC

  • B60H1/3407 - providing an air stream in a fixed direction
  • B60H2001/3485 - Air temperature regulation

• US Classifications

  • 454 - Ventilation
  • 237 - Heating systems