A
HUMAN NECESSITIES
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A61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
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A61N
ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
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A61N1/00
Electrotherapy; Circuits therefor
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A61N1/18
Applying electric currents by contact electrodes
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A61N1/32
alternating or intermittent currents
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