1977151

Information

• Patent Grant
• 1977151

• References
• Source

• Patent Number

  1,977,151

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1934
  90 years ago

• CPC

  • F23Q7/04 - with fans for transfer of heat to fuel

• US Classifications

  • 219 - Electric heating
  • 361 - Electricity: electrical systems and devices
  • 392 - Electric resistance heating devices