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发明名称
TRAY FOR PHOTOGRAPHIC TRANSPARENCIES
摘要
申请公布号
US3522989(A)
申请公布日期
1970.08.04
申请号
USD3522989
申请日期
1967.11.21
申请人
BRAUN AG.
发明人
HANS WERNER JOHANNSEN
分类号
G03B23/02;(IPC1-7):G03B23/04
主分类号
G03B23/02
代理机构
代理人
主权项
地址
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