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发明名称
Electrical drive for sound film equipments and the like
摘要
申请公布号
US1943065(A)
申请公布日期
1934.01.09
申请号
US19300498305
申请日期
1930.11.26
申请人
SIEMENS & HALSKE, AKTIENGESELLSCHAFT
发明人
FISCHER FRITZ
分类号
G03B31/00
主分类号
G03B31/00
代理机构
代理人
主权项
地址
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