391775

Information

• Patent Grant
• 391775

• References
• Source

• Patent Number

  391,775

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1888
  136 years ago

• CPC

  • F28F27/00 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
  • F24F11/0012 - Air temperature
  • Y10S165/004 - Sight glass

• US Classifications

  • 165 - Heat exchange