RESPIRATORY VEST FOR EMPHYSEMA PATIENTS
United States Patent 3481327

Inventors:
Drennen, Lillian G.
Publication Date:
12/02/1969
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Assignee:
Lillian, Drennen G.
Primary Class:
601/44
International Classes:
A61H31/00; A61H23/04; A61H31/02; A61H7/00




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