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经营范围
发明名称
Play dater
摘要
申请公布号
US2368167(A)
申请公布日期
1945.01.30
申请号
US19430474462
申请日期
1943.02.02
申请人
SHERAM WADE P
发明人
SHERAM WADE P.
分类号
G09F13/00
主分类号
G09F13/00
代理机构
代理人
主权项
地址
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