<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31379687</termId><termName>comparison lamps</termName><termType>PT</termType><termNote><![CDATA[ Incandescent lamps having a constant but not necessarily known luminous intensity against which other lamps are successively compared in a photometer. ]]></termNote><termCreatedDate>2026-03-30 20:42:25</termCreatedDate><relation><relationType>UF</relationType><termId>31379688</termId><termName>comparison lamp</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31379689</termId><termName>lamps, comparison</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31349898</termId><termName>light bulbs</termName><termType>PT</termType></relation></term>  </Zthes>