EXTERNAL EAR INSERT FOR HEARING COMPREHENSION ENHANCEMENT
- 专利权人:
- Carl L.C. Kah; JR.
- 发明人:
- Carl L.C. Kah, JR.
- 申请号：
- US16751599
- 公开号：
- US20200160822A1
- 申请日:
- 2020.01.24
- 申请国别(地区):
- US
- 年份:
- 2020
- 代理人:
- 摘要：
- A simple hearing enhancement device that takes the normally adequately loud sound levels and optimizes selective frequency gain of the patient's ear passage to improve speech comprehension.
- 来源网站：
- 中国工程科技知识中心
