Medical and laboratory equipment – Equipment for diagnosis – analysis – or treatment – Pulmonary
Patent
1990-03-30
1992-04-21
Reid, Stella
Medical and laboratory equipment
Equipment for diagnosis, analysis, or treatment
Pulmonary
Patent
active
D03256340
REFERENCES:
patent: 3922525 (1975-11-01), Kozak et al.
patent: 4138105 (1979-02-01), Hunger et al.
patent: 4391283 (1983-07-01), Sharpless et al.
patent: 4635647 (1987-01-01), Choksi
Vitalograph publication, The Compact Spirometer.
Reid Stella
Welch Allyn Inc.
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