APPARATUS
Subclass of:
204 - Chemistry: electrical and wave energy
Patent class list (only not empty are listed)
Deeper subclasses:
Class / Patent application number | Description | Number of patent applications / Date published |
---|---|---|
204194000 | Electrolytic | 2446 |
204298010 | Coating, forming or etching by sputtering | 866 |
204600000 | Electrophoretic or electro-osmotic apparatus | 441 |
204660000 | Apparatus for electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) | 101 |
204298410 | Vacuum arc discharge coating | 25 |