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发明名称
Adjustable support for bulletin board
摘要
申请公布号
US3081972(A)
申请公布日期
1963.03.19
申请号
US19600008698D
申请日期
1960.02.15
申请人
WALRUS MANUFACTURING COMPANY
发明人
JR. RICHARD I. GRAY,
分类号
G09F15/00
主分类号
G09F15/00
代理机构
代理人
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地址
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