3815552

Information

• Patent Grant
• 3815552

• References
• Source

• Patent Number

  3,815,552

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • F24H9/2035 - for heaters using fluid combustibles
  • F24H1/0009 - of the reduced pressure or vacuum steam type
  • F24H1/50 - incorporating domestic water tanks

• US Classifications

  • 122 - Liquid heaters and vaporizers
  • 392 - Electric resistance heating devices