Hearing protection device in the folded form ready for the distribution

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专利权人:

3M INNOVATIVE PROPERTIES COMPANY

发明人:

BARWACZ ROBERT F.,BARWACZ ROBERT F.

申请号：

PL12071403

公开号：

PL120714U1

申请日:

2003.10.14

申请国别(地区):

PL

年份:

2012

代理人:

摘要：

A hearing protective device is provided including a first sound attenuating element, a second sound attenuating element, a flexible elongated member connecting the first sound attenuating element and the second sound attenuating element, and a knot formed in the flexible elongated member, the knot is untied by moving the first sound attenuating element in a direction away from second sound attenuating element.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/