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发明名称
Means for producing a testing thread
摘要
申请公布号
US2167808(A)
申请公布日期
1939.08.01
申请号
US19370147970
申请日期
1937.06.12
申请人
PAUL LITTY
发明人
LITTY PAUL
分类号
D01G15/00
主分类号
D01G15/00
代理机构
代理人
主权项
地址
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