1948939

Information

• Patent Grant
• 1948939

• References
• Source

• Patent Number

  1,948,939

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1934
  91 years ago

• CPC

  • F22G7/06 - in furnace tubes

• US Classifications

  • 122 - Liquid heaters and vaporizers