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经营范围
发明名称
Shutter mechanism
摘要
申请公布号
US2728077(A)
申请公布日期
1955.12.27
申请号
US19520321650
申请日期
1952.11.20
申请人
DENING ROBERT D
发明人
DENING ROBERT D.
分类号
A61F9/06
主分类号
A61F9/06
代理机构
代理人
主权项
地址
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