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发明名称
Revetment
摘要
申请公布号
US2502757(A)
申请公布日期
1950.04.04
申请号
US19470727043
申请日期
1947.02.07
申请人
MCD SHEARER DAVID
发明人
SHEARER DAVID MCD.
分类号
E02B3/12
主分类号
E02B3/12
代理机构
代理人
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