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황토판의 제조방법 및 그로부터 제조된 황토판
发明专利审中
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§ Ⅰ
卷宗概要
IPC 分类
B28B 3/2B28B 1/C4B 14/4C4B 14/10C4B 14/28C4B 14/36C4B 18/10C4B 22/6C4B 24/6C4B 24/8C4B 26/4
CPC 分类
B28B3/2B28B1/2C4B14/47C4B14/10C4B14/28C4B14/361C4B18/105C4B22/64C4B24/6C4B24/8C4B26/4
IPC 分类
CPC 分类