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发明名称
Method of making casting wheels
摘要
申请公布号
US1947462(A)
申请公布日期
1934.02.20
申请号
US19300498957
申请日期
1930.11.29
申请人
DU PONT FILM MANUFACTURING CORPORATION
发明人
DOORBAR JOHN H.
分类号
B23K5/00
主分类号
B23K5/00
代理机构
代理人
主权项
地址
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