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摘要
申请公布号
US2202957(A)
申请公布日期
1940.06.04
申请号
US19390282896
申请日期
1939.07.05
申请人
MARTIN JOHN E
发明人
MARTIN JOHN E.
分类号
B43L15/00
主分类号
B43L15/00
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