1891862

Information

• Patent Grant
• 1891862

• References
• Source

• Patent Number

  1,891,862

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1932
  92 years ago

• CPC

  • F22B21/14 - involving a single upper drum and two or more lower drums

• US Classifications

  • 122 - Liquid heaters and vaporizers