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发明名称
Ultrasonic web position detector and aligning means
摘要
申请公布号
US3225988(A)
申请公布日期
1965.12.28
申请号
US19630300497
申请日期
1963.08.07
申请人
KOPPERS COMPANY, INC.
发明人
DRENNING JOHN W.
分类号
B65H23/02;B65H23/032
主分类号
B65H23/02
代理机构
代理人
主权项
地址
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STRUCTURE OF DUCT
