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发明名称
PERPETUAL CALENDAR
摘要
申请公布号
CA349072(A)
申请公布日期
1935.03.26
申请号
CAD349072
申请日期
申请人
MARTIN C. HALEY
发明人
MARTIN C. HALEY
分类号
主分类号
代理机构
代理人
主权项
地址
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