1858890

Information

• Patent Grant
• 1858890

• References
• Source

• Patent Number

  1,858,890

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1932
  93 years ago

• CPC

  • F22B21/24 - bent in serpentine or sinuous form
  • F22B37/143 - Panel shaped heating surfaces built up from tubes

• US Classifications

  • 122 - Liquid heaters and vaporizers