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发明名称
Universal ball and socket joint
摘要
申请公布号
US2771309(A)
申请公布日期
1956.11.20
申请号
US19540435744
申请日期
1954.06.10
申请人
CLARK METAL PRODUCTS, INC.
发明人
JR. LANCASTER P. CLARK,
分类号
F21V21/29
主分类号
F21V21/29
代理机构
代理人
主权项
地址
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