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发明名称
Dies and method for closing pressed-metal-pipe fittings
摘要
申请公布号
US1777351(A)
申请公布日期
1930.10.07
申请号
US19290338842
申请日期
1929.02.09
申请人
ROCKWOOD SPRINKLER COMPANY OF MASSACHUSETTS
发明人
CARLSON HJALMAR G.
分类号
B21C37/28
主分类号
B21C37/28
代理机构
代理人
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地址
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