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Patente
Imagem Patente nº Nome da Patente Tipo de patente Data Disponível --- Data de Expiração Verificado
high pressure self-energized pipe connector ZL 2016 2 1266581.4 high pressure self-energized pipe connector UTILITY_MODEL 2018-02-06 ~ Verificado
A way of welding for middle and high carbon steel ZL 2010 I 0551155.6 A way of welding for middle and high carbon steel UTILITY_MODEL 2014-04-02 ~ Verificado

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