1639938

Information

• Patent Grant
• 1639938

• References
• Source

• Patent Number

  1,639,938

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1927
  97 years ago

• CPC

  • B21J19/02 - Hearths Air supply arrangements specially adapted therefor

• US Classifications

  • 431 - Combustion