1957921

Information

• Patent Grant
• 1957921

• References
• Source

• Patent Number

  1,957,921

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1934
  90 years ago

• CPC

  • F23C99/00 - Subject-matter not provided for in other groups of this subclass
  • F23B1/18 - using inclined grate
  • F23L1/02 - by discharging the air below the fire
  • F23C2700/066 - Other special arrangements

• US Classifications

  • 110 - Furnaces