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经营范围
发明名称
PIPE CLEANING
摘要
申请公布号
US3600225(A)
申请公布日期
1971.08.17
申请号
USD3600225
申请日期
1968.09.19
申请人
ROCKWELL MFG. CO.
发明人
BRUCE R. PARMELEE
分类号
B08B9/053;E03F9/00;(IPC1-7):B08B9/04
主分类号
B08B9/053
代理机构
代理人
主权项
地址
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