| 发明名称 |
PAIRING EARPLUG CONSTRUCTION AND METHOD FOR FABRICATION THEREOF |
| 摘要 |
Disclosed herein is a tethered earplug construction comprising a pair of plasticized thermoplastic foam earplugs tethered together by one or more flexible plasticized thermoplastic cord elements. Attachment of the cord element to the earplug is achieved by ultrasonic welding. |
| 申请公布号 |
ZA7900910(B) |
申请公布日期 |
1980.02.27 |
| 申请号 |
ZA19790000910 |
申请日期 |
1979.02.26 |
| 申请人 |
EAR CORP |
发明人 |
WACKER A |
| 分类号 |
A61F11/08;A61F11/10;A61F11/12;B29C65/08;B29K105/04 |
主分类号 |
A61F11/08 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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