1179406

Information

• Patent Grant
• 1179406

• References
• Source

• Patent Number

  1,179,406

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1916
  109 years ago

• CPC

  • F24D5/04 - with return of the air or the air-heater
  • Y10S454/904 - Magnetic means to hold a damper closed

• US Classifications

  • 237 - Heating systems
  • 454 - Ventilation