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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8/00
Diagnosis using ultrasonic, sonic or infrasonic waves
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A61B8/42
Details of probe positioning or probe attachment to the patient
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A61B8/4245
involving determining the position of the probe, e.g. with respect to an external reference frame or to the patient
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A61B8/4263
using sensors not mounted on the probe, e.g. mounted on an external reference frame
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