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发明名称
Multiple check
摘要
申请公布号
US2310332(A)
申请公布日期
1943.02.09
申请号
US19420438642
申请日期
1942.04.11
申请人
WILBANKS EARLY A
发明人
WILBANKS EARLY A.
分类号
B42D15/00
主分类号
B42D15/00
代理机构
代理人
主权项
地址
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