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摘要
申请公布号
US2246976(A)
申请公布日期
1941.06.24
申请号
US19380217048
申请日期
1938.07.01
申请人
REVERE COPPER AND BRASS INCORPORATED
发明人
GOULDING JOSEPH M.
分类号
B41F13/08
主分类号
B41F13/08
代理机构
代理人
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