<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31446872</termId><termName>hydrostatic lamps</termName><termType>PT</termType><termNote><![CDATA[ Lamps employing the principle of hydrostatic balance to deliver oil to the wick. ]]></termNote><termCreatedDate>2026-03-30 21:04:47</termCreatedDate><relation><relationType>UF</relationType><termId>31446873</termId><termName>hydrostatic lamp</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31446874</termId><termName>lamps, hydrostatic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31446875</termId><termName>lamps, oleostatic</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31446876</termId><termName>oleostatic lamps</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31424515</termId><termName>lamps by form</termName><termType>PT</termType></relation></term>  </Zthes>