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发明名称
Vestibule diaphragm
摘要
申请公布号
US2568684(A)
申请公布日期
1951.09.18
申请号
US19470781789
申请日期
1947.10.24
申请人
MIHALYI RICHARD F
发明人
MIHALYI RICHARD F.
分类号
A63H19/16
主分类号
A63H19/16
代理机构
代理人
主权项
地址
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