Single or multi-stage diaphragm compressor with a mechanically moved diaphragm
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Device for spraying a gas-liquid mixture, in particular a carbonic acid-water mixture
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Transfer pump with two or more pressure levels
DE760287C
Device for checking the tightness and uniform release of oxygen from oxygen breathing apparatus
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Oxygen breathing apparatus
DE683776C
Procedure for filling oxygen bottles
DE720136C
Device for protecting babies from chemical warfare agents
DE730982C
Oxygen breathing apparatus with an automatically controlled nutrient gas supply
DE727795C
Oxygen breathing apparatus with lung-controlled nutrient gas supply
DE706468C
Device for checking the tightness and uniform release of oxygen from oxygen breathing apparatus
DE732821C
Push-button valve for switching on a precision pressure gauge in the pressure line of a device for testing the authenticity and uniform release of oxygen from breathing apparatus
DE735070C
Oxygen breathing apparatus with breathing air circulation
DE730319C
Shelter fan
DE887454C
Oxygen breathing apparatus with lung-controlled oxygen supply
DE709959C
Oxygen breathing apparatus with breathing air circulation
