2247858

Information

• Patent Grant
• 2247858

• References
• Source

• Patent Number

  2,247,858

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1941
  83 years ago

• CPC

  • F23D5/18 - Preheating devices

• US Classifications

  • 431 - Combustion
  • 123 - Internal-combustion engines
  • 236 - Automatic temperature and humidity regulation