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经营范围
发明名称
Calendar indicator mechanism
摘要
申请公布号
US2671307(A)
申请公布日期
1954.03.09
申请号
US19500179502
申请日期
1950.08.15
申请人
ARTHUR IMHOF
发明人
IMHOF ARTHUR
分类号
G04B19/253
主分类号
G04B19/253
代理机构
代理人
主权项
地址
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