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发明名称
ADJUSTABLE SIGNAL BACK PLATE
摘要
申请公布号
US3571791(A)
申请公布日期
1971.03.23
申请号
USD3571791
申请日期
1969.02.03
申请人
ALFRED P. PARDUHN
发明人
ALFRED P. PARDUHN
分类号
G08G1/095
主分类号
G08G1/095
代理机构
代理人
主权项
地址
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