1969406

Information

• Patent Grant
• 1969406

• References
• Source

• Patent Number

  1,969,406

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1934
  90 years ago

• CPC

  • F22B37/202 - Suspension and securing arrangements for contact heating surfaces
  • F22B21/34 - built-up from water tubes grouped in panel form surrounding the combustion chamber
  • F22B29/08 - operating with fixed point of final state of complete evaporation
  • F22D1/02 - with water tubes arranged in the boiler furnace, fire tubes, or flue ways

• US Classifications

  • 122 - Liquid heaters and vaporizers