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| Subject | English | German |
| gen. | filters for respiratory masks | Filter für Atemmasken |
| gen. | respiratory mask | Beatmungsmaske |
| med. | respiratory mask | Respirator |
| med. | respiratory mask | Teilgesichtsmaske |
| gen. | respiratory mask | Atemmaske |
| patents. | respiratory masks | Atemmasken |
| gen. | respiratory masks other than for artificial respiration | Atemmasken ausgenommen für künstliche Beatmung |