[Appliance for vacuum pressure in expiration for C.-G. Engström's respirator].
D045853:Exhalation; D006801:Humans; D011312:Pressure; D014618:Vacuum; D012122:Ventilators, Mechanical
RESPIRATORS
Anordning för vacuumtryck å exspiriet till respirator enl. C.-G. Engström.