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发明名称
Method of making molds
摘要
申请公布号
US2092832(A)
申请公布日期
1937.09.14
申请号
US19360077305
申请日期
1936.05.01
申请人
SIGMUND COHN
发明人
COHN SIGMUND
分类号
B22D18/06
主分类号
B22D18/06
代理机构
代理人
主权项
地址
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