Ventilatory instrument for measuring peak expiratory flow

Details Ventilatory instrument for measuring peak expiratory flow Ventilatory instrument for measuring peak expiratory flow

1990-09-28

1993-02-02

Douglas, Alan P.

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Pulmonary

Patent

active

D03330044

REFERENCES:
patent: D325634 (1992-04-01), Sweeney, Jr.
patent: 2892348 (1959-06-01), Ekstrom, Jr.
patent: 3367324 (1968-02-01), De Bono
patent: 3857277 (1974-12-01), Moore
patent: 3946726 (1976-03-01), Pikul
patent: 3955415 (1976-05-01), Sharon
patent: 4041935 (1977-08-01), Garbe
patent: 4638812 (1987-01-01), Hakkinen
patent: 4787627 (1988-11-01), Daubenspeck
patent: 5137026 (1992-08-01), Waterson et al.

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