DIN EN ISO 4869-4:1999-11
Superseded Draft standard
Historical

DIN EN ISO 4869-4:1999-11

Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs (ISO/TR 4869-4:1998); German version prEN ISO 4869-4:1999
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Technical characteristics

Publisher Deutsche Institut für Normung e.V. (DIN)
Publication Date 11/01/1999
Page Count 8
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Weight (in grams) ---
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