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发明名称
Check protector
摘要
申请公布号
US1783219(A)
申请公布日期
1930.12.02
申请号
US19280293906
申请日期
1928.07.19
申请人
THE HEDMAN MANUFACTURING COMPANY
发明人
CARLSON JOHN W.
分类号
B41K3/00
主分类号
B41K3/00
代理机构
代理人
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