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发明名称
Detachable button
摘要
申请公布号
US2484654(A)
申请公布日期
1949.10.11
申请号
US19450609236
申请日期
1945.08.06
申请人
SHAFFER HARRY A
发明人
SHAFFER HARRY A.
分类号
A44B1/18
主分类号
A44B1/18
代理机构
代理人
主权项
地址
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