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经营范围
发明名称
Ceramic
摘要
申请公布号
US2337521(A)
申请公布日期
1943.12.21
申请号
US19400367621
申请日期
1940.11.28
申请人
COOPER-WILFORD BERYLLIUM, LTD.
发明人
COOPER HUGH S.
分类号
C03C3/062;C03C3/112;C04B35/08
主分类号
C03C3/062
代理机构
代理人
主权项
地址
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