2186904

Information

• Patent Grant
• 2186904

• References
• Source

• Patent Number

  2,186,904

• Date Filed

  Not available

• Date Issued

  Tuesday, January 9, 1940
  85 years ago

• CPC

  • F22G7/065 - for locomotive boilers

• US Classifications

  • 122 - Liquid heaters and vaporizers