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经营范围
发明名称
Photo-acoustic cinematographic apparatus
摘要
申请公布号
US1939522(A)
申请公布日期
1933.12.12
申请号
US19330650375
申请日期
1933.01.06
申请人
WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY
发明人
REYNOLDS ELLWOOD W.
分类号
G03B31/00;G03B31/02
主分类号
G03B31/00
代理机构
代理人
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地址
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