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发明名称
Method for the preparation of germanium
摘要
申请公布号
US2704708(A)
申请公布日期
1955.03.22
申请号
US19490109751
申请日期
1949.08.11
申请人
SOCIETE ANONYME DITE: COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE
发明人
WELKER HEINRICH
分类号
B28D1/00;C30B9/00
主分类号
B28D1/00
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代理人
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