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发明名称
DUCTING
摘要
申请公布号
CA874806(A)
申请公布日期
1971.07.06
申请号
CAD874806
申请日期
1968.12.18
申请人
ROBERT J. PAVIA
发明人
ROBERT J. PAVIA
分类号
F16L9/00;F16L13/00;F16L23/14
主分类号
F16L9/00
代理机构
代理人
主权项
地址
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