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发明名称
Spring bar
摘要
申请公布号
US2157408(A)
申请公布日期
1939.05.09
申请号
US19370178029
申请日期
1937.12.04
申请人
GREENBERG CHARLES B
发明人
GREENBERG CHARLES B.
分类号
A47H1/022
主分类号
A47H1/022
代理机构
代理人
主权项
地址
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