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发明名称
MANUFACTURE OF TUNGSTEN POWDER
摘要
申请公布号
JPH028304(A)
申请公布日期
1990.01.11
申请号
JP19880158894
申请日期
1988.06.27
申请人
CENTRAL GLASS CO LTD
发明人
ISHIBASHI TAKAYUKI;IMADA KAZUTOSHI;MOROI SHIRO;OKABAYASHI SHOJI;MIZOBE HIROAKI;KIDA YASUSHI
分类号
B22F9/22
主分类号
B22F9/22
代理机构
代理人
主权项
地址
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