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发明名称
Check device
摘要
申请公布号
US1926850(A)
申请公布日期
1933.09.12
申请号
US19330654796
申请日期
1933.02.02
申请人
SHUR-CHEK COMPANY, INC.
发明人
GREGORY GEORGE W.
分类号
D06F93/00
主分类号
D06F93/00
代理机构
代理人
主权项
地址
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