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发明名称
Film gate having projecting pressure receiving elements
摘要
申请公布号
US2506765(A)
申请公布日期
1950.05.09
申请号
US19480013484
申请日期
1948.03.06
申请人
BERNDT-BACH, INCORPORATED
发明人
BACH WALTER H.
分类号
G03B1/56
主分类号
G03B1/56
代理机构
代理人
主权项
地址
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