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发明名称
Hinge joint for jewelry
摘要
申请公布号
US2303267(A)
申请公布日期
1942.11.24
申请号
US19410400016
申请日期
1941.06.27
申请人
B. A. BALLOU & CO., INC.
发明人
GOODWIN CHARLES A.
分类号
A44C7/00
主分类号
A44C7/00
代理机构
代理人
主权项
地址
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