Sealing strip for ear plugs and the like
作者： Davis W. Chamberlin , Robert J. Oliveira
DOI:
关键词:
摘要: A composite reusable sound attenuating or transmitting device, especially an ear plug, is formed from a core (20) about which adhered strip (10) of slow recovery foam. After each use the foam generally removed, and discarded. Typically, new applied next time device used.
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google.nl 参考文章(12)
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