1875637

Information

• Patent Grant
• 1875637

• References
• Source

• Patent Number

  1,875,637

• Date Filed

  Not available

• Date Issued

  Tuesday, September 6, 1932
  92 years ago

• CPC

  • B60H1/16 - the air being heated by direct contact with the plant

• US Classifications

  • 237 - Heating systems
  • 454 - Ventilation