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发明名称
Bellows type envelope having all edges of mouth reinforced
摘要
申请公布号
US2460909(A)
申请公布日期
1949.02.08
申请号
US19460652940
申请日期
1946.03.08
申请人
SHAFFER MORTON J
发明人
SHAFFER MORTON J.
分类号
B42F7/00
主分类号
B42F7/00
代理机构
代理人
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地址
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