3721728

Information

• Patent Grant
• 3721728

• References
• Source

• Patent Number

  3,721,728

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • F23C99/00 - Subject-matter not provided for in other groups of this subclass
  • F23L1/00 - Passages or apertures for delivering primary air for combustion
  • F23C2700/066 - Other special arrangements

• US Classifications

  • 432 - Heating
  • 431 - Combustion