Devices for facilitating collection of breath or for directing breath into or through measuring devices

Full Title

Measuring for diagnostic purposes; Identification of persons > Measuring devices for evaluating the respiratory organs > Devices for facilitating collection of breath or for directing breath into or through measuring devices

Classification Context

Section:

HUMAN NECESSITIES

Class:

MEDICAL OR VETERINARY SCIENCE; HYGIENE

Subclass:

DIAGNOSIS; SURGERY; IDENTIFICATION