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发明名称
Method of making apertures in plastic earthenware
摘要
申请公布号
US2334855(A)
申请公布日期
1943.11.23
申请号
US19400364888
申请日期
1940.11.08
申请人
CRANE CO.
发明人
ZINKIL ROY H.
分类号
B28B11/12
主分类号
B28B11/12
代理机构
代理人
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地址
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