90713857
May 16, 2021
Pressure threshold respiratory muscle training device for medical and diagnostic use, namely, a respiratory device for exercising the breathing muscles which incorporates a pressure meter for use in adjusting and measuring breathing difficulty levels, and structural parts therefor
Medical ApparatusPhysical fitness apparatus in the nature of a respiratory muscle training device using pressure threshold to strengthen core and increase lung capacity incorporating a pressure meter for use in adjusting and measuring breathing difficulty levels
Toys and Sporting Goods