Breathing exerciser

Details Breathing exerciser Breathing exerciser

1988-11-08

1991-09-10

Reid, Stella

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Pulmonary

Patent

active

D03198804

REFERENCES:
patent: D269124 (1983-05-01), McCombs et al.
patent: 4060074 (1977-11-01), Russo
patent: 4114608 (1978-09-01), Russo
patent: 4221381 (1980-09-01), Ericson
patent: 4425923 (1984-01-01), Gordon et al.
patent: 4499905 (1985-01-01), Greenberg et al.
Introducing the DHD Coach brochures dated 9/85.

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