1816520

Information

• Patent Grant
• 1816520

• References
• Source

• Patent Number

  1,816,520

• Date Filed

  Not available

• Date Issued

  Tuesday, July 28, 1931
  94 years ago

• CPC

  • F22B21/40 - built-up from water tubes arranged in a comparatively long vertical shaft
  • Y10S122/04 - Once through boilers

• US Classifications

  • 122 - Liquid heaters and vaporizers