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发明名称
MICROFILM VIEWER
摘要
申请公布号
US3604794(A)
申请公布日期
1971.09.14
申请号
USD3604794
申请日期
1969.03.12
申请人
LABTRON CORP. OF AMERICA
发明人
NICHOLAS T. SIMOPOULOS
分类号
G03B21/10;G03B21/11;G03B21/16;(IPC1-7):G03B21/16
主分类号
G03B21/10
代理机构
代理人
主权项
地址
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