Patents Assigned to HALCYON RESEARCH, INC.
  • Air resistance device
    Patent number: 10369408
    Abstract: 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.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: August 6, 2019
    Assignee: HALCYON RESEARCH, INC.
    Inventors: Dana Kesslen Keller, Mary Lou Casadevall-Keller