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发明名称
Method of making pipe fittings
摘要
申请公布号
US1830262(A)
申请公布日期
1931.11.03
申请号
US19280307515
申请日期
1928.09.21
申请人
ROCKWOOD SPRINKLER COMPANY OF MASSACHUSETTS
发明人
CARLSON HJALMAR G.
分类号
B21C37/29
主分类号
B21C37/29
代理机构
代理人
主权项
地址
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