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发明名称
Composite block
摘要
申请公布号
US2152190(A)
申请公布日期
1939.03.28
申请号
US19360082227
申请日期
1936.05.28
申请人
WILLIAM P. WITHEROW
发明人
HENDERSON ALBERT
分类号
B28B19/00;E04C1/41
主分类号
B28B19/00
代理机构
代理人
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地址
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