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发明名称
Binder post
摘要
申请公布号
US2417141(A)
申请公布日期
1947.03.11
申请号
US19430483420
申请日期
1943.04.17
申请人
SYFERT WILLIAM W
发明人
SYFERT WILLIAM W.
分类号
B42F13/04
主分类号
B42F13/04
代理机构
代理人
主权项
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