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发明名称
Memorandum indicator
摘要
申请公布号
US2707932(A)
申请公布日期
1955.05.10
申请号
US19540451564
申请日期
1954.08.23
申请人
ELAINE MASCIANA JOYCE
发明人
MASCIANA JOYCE ELAINE
分类号
G09B29/00
主分类号
G09B29/00
代理机构
代理人
主权项
地址
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