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经营范围
发明名称
SIGHT GLASS FOR THE INSIDE INSPECTION OF PIPES AND CLEANING OF SAME
摘要
申请公布号
US3672749(A)
申请公布日期
1972.06.27
申请号
USD3672749
申请日期
1970.09.11
申请人
KENNETH F. ROSER
发明人
KENNETH F. ROSER
分类号
G02B23/24;(IPC1-7):G02B5/00
主分类号
G02B23/24
代理机构
代理人
主权项
地址
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