EAR PLUG DEVICE SYSTEM
- 专利权人:
- Glenn R. Hood; III
- 发明人:
- Glenn R. Hood, III
- 申请号：
- US15222475
- 公开号：
- US20170027758A1
- 申请日:
- 2016.07.28
- 申请国别(地区):
- US
- 年份:
- 2017
- 代理人:
- 摘要：
- An earplug device system having three main parts that include the flat attenuation filter, the non-linear filter, and the selective orifices. All three parts work together to create a unique sound experience for users.
- 来源网站：
- 中国工程科技知识中心
