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发明名称
PREPARATION OF TUNGSTEN POWDER
摘要
申请公布号
JPS5770208(A)
申请公布日期
1982.04.30
申请号
JP19800147025
申请日期
1980.10.20
申请人
NIHON TUNGSTEN KK
发明人
YAMAMOTO HIROSHI
分类号
B22F9/22;B22F9/20;C22B34/36
主分类号
B22F9/22
代理机构
代理人
主权项
地址
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