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发明名称
Envelope
摘要
申请公布号
US2041434(A)
申请公布日期
1936.05.19
申请号
US19330696074
申请日期
1933.10.31
申请人
SCHRAM WILLIAM G;BIRCHALL FRANCIS C
发明人
SCHRAM WILLIAM G.;BIRCHALL FRANCIS C.
分类号
B42D15/08
主分类号
B42D15/08
代理机构
代理人
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