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发明名称
SELF-ALIGNING RING JOINT FOR JOINING CONCRETE PIPES HAVING ENDS ADAPTED FOR USE THEREWITH
摘要
申请公布号
PH16016(A)
申请公布日期
1983.05.27
申请号
PH19260000207
申请日期
1978.01.30
申请人
MITCHELL MING CHANG HSU
发明人
MITCHELL MING CHANG HSU
分类号
F16L21/02
主分类号
F16L21/02
代理机构
代理人
主权项
地址
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