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发明名称
Chain manufacture
摘要
申请公布号
US1828506(A)
申请公布日期
1931.10.20
申请号
US19280327872
申请日期
1928.12.22
申请人
MORSE FRANK L
发明人
MORSE FRANK L.
分类号
B21C47/34;B65H49/34
主分类号
B21C47/34
代理机构
代理人
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