Air resistance device

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专利权人:

Halcyon Research; Inc.

发明人:

Dana Kesslen Keller,Mary Lou Casadevall-Keller

申请号：

US15466923

公开号：

US10369408B2

申请日:

2017.03.23

申请国别(地区):

US

年份:

2019

代理人:

摘要：

An attachment for a harmonica or a pulmonary harmonica may include a resistance band or modified comb which increases respiratory resistance from the typical open holes of harmonicas. The resistance band or modified comb may prevent a broken reed from being inhaled into the mouth.

来源网站：

中国工程科技知识中心

来源网址：

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