<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31377287</termId><termName>viscous impingement filters</termName><termType>PT</termType><termNote><![CDATA[ Air-cleaning filters that employ a surface covered with a viscous oil or fluid, to which dirt particles and other airborne impurities cling as the air passes through. ]]></termNote><termCreatedDate>2026-03-30 20:41:45</termCreatedDate><relation><relationType>UF</relationType><termId>31377288</termId><termName>filters, viscous impingement</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377289</termId><termName>impingement filters, viscous</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377290</termId><termName>viscous filters</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377291</termId><termName>viscous impingement filter</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31347180</termId><termName>air filters</termName><termType>PT</termType></relation></term>  </Zthes>