<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31354482</termId><termName>air purifiers</termName><termType>PT</termType><termNote><![CDATA[ Devices intended to eliminate impurities in the air. ]]></termNote><termCreatedDate>2026-03-30 20:35:39</termCreatedDate><relation><relationType>UF</relationType><termId>31354483</termId><termName>air purifier</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31354484</termId><termName>purifiers, air</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31324632</termId><termName>appliances</termName><termType>PT</termType></relation></term>  </Zthes>