Patent classifications
A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61B
DIAGNOSIS; SURGERY; IDENTIFICATION
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5/00
Measuring for diagnostic purposes; Identification of persons Display name: Medical measurements for diagnostic or identification purposes
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A61B5/08
Measuring devices for evaluating the respiratory organs
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A61B5/091
Measuring volume of inspired or expired gases, e.g. to determine lung capacity
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A61B5/093
the gases being exhaled into, or inhaled from, an expansible chamber, e.g. bellows or expansible bag
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A61B5/0935
Recording apparatus specially adapted therefor
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