Patents_Trademarks MSZH - Magyar Szabadalmi Hivatal (Hungarian: Hungarian Patent Office) ... 2022-06-15 阅读 270 发表评论(0) 阅读全文
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Patents_Trademarks IPCR - International Patent Classification Reform ... 2022-02-08 阅读 810 发表评论(0) 阅读全文
Patents_Trademarks WIPO - World Information and Patents Organisation ... 2021-12-13 阅读 858 发表评论(0) 阅读全文