<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31471569</termId><termName>key changing locks</termName><termType>PT</termType><termNote><![CDATA[ Locks designed so that the key’s combination of bits can be changed at will, eliminating the operation of the lock with a previous key’s bit combination. ]]></termNote><termCreatedDate>2026-03-30 21:06:55</termCreatedDate><relation><relationType>UF</relationType><termId>31471570</termId><termName>key changing lock</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31471571</termId><termName>locks, key changing</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31458108</termId><termName>locks by form</termName><termType>PT</termType></relation></term>  </Zthes>