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发明名称
Statement sheet and envelope
摘要
申请公布号
US2777631(A)
申请公布日期
1957.01.15
申请号
US19530386058
申请日期
1953.10.14
申请人
JOSEPH ZALKIND
发明人
ZALKIND JOSEPH
分类号
B42D15/08
主分类号
B42D15/08
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代理人
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