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Class Information
Number: 392/
Name: Electric resistance heating devices > Heating devices (class 219 subclass 200)

Sub-classes under this class:

Class Number Class Name Patents
392/301 Borehole type 63
392/307 Combined with nonelectric heating means (e.g., gas, etc.) 60
392/379 Concentrated heated air stream (i.e., blast) 217
392/465 Continuous flow type fluid heater 202
392/347 Convection space heater 80
392/311 Fluid-in-circuit type heater 28
392/497 Immersion heater details 111
392/407 Radiant heater 241
392/441 Tank or container type liquid heater 216
392/386 Vaporizer 201
392/339 With heat storage means 31

Patents under this class:

Patent Number Title Of Patent Date Issued

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