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经营范围
发明名称
Crystal holder
摘要
申请公布号
US2484004(A)
申请公布日期
1949.10.04
申请号
US19450628518
申请日期
1945.11.14
申请人
REEVES HOFFMAN CORPORATION
发明人
JR. JAMES B. ADAMS,
分类号
H03H9/10
主分类号
H03H9/10
代理机构
代理人
主权项
地址
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