Supply and exhaust
Subclass of:
137 - Fluid handling
137561000 - SYSTEMS
137625000 - Multi-way valve unit
Patent class list (only not empty are listed)
Deeper subclasses:
Class / Patent application number | Description | Number of patent applications / Date published |
---|---|---|
137625600 | Pilot-actuated | 40 |
137625250 | Reciprocating valve | 34 |
137625650 | Motor-operated | 17 |
137625210 | Rotary valve | 10 |