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发明名称
DISPLAY DEVICES
摘要
申请公布号
CA812600(A)
申请公布日期
1969.05.13
申请号
CAD812600
申请日期
申请人
AMERICAN GREETINGS CORPORATION
发明人
CHARLES H. NERVIG;GEORGE J. THEODORE
分类号
主分类号
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