Electric heating
Patent class list (only not empty are listed)
Deeper subclasses:
Class / Patent application number | Description | Number of patent applications / Date published |
---|---|---|
219050000 | METAL HEATING (E.G., RESISTANCE HEATING) | 4713 |
219200000 | HEATING DEVICES | 2999 |
219600000 | INDUCTIVE HEATING | 892 |
219678000 | MICROWAVE HEATING | 755 |
219764000 | CAPACITIVE DIELECTRIC HEATING | 12 |