2147997

Information

• Patent Grant
• 2147997

• References
• Source

• Patent Number

  2,147,997

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1939
  85 years ago

• CPC

  • F27B9/3044 - Furnace regenerators
  • F27B9/22 - on rails

• US Classifications

  • 432 - Heating