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经营范围
发明名称
Handhole plug
摘要
申请公布号
US3235120(A)
申请公布日期
1966.02.15
申请号
US19650437962
申请日期
1965.03.08
申请人
BETHLEHEM STEEL CORPORATION
发明人
WORTHEN EUGENE PORTER;STELLING JOHN HENRY
分类号
F22B37/22
主分类号
F22B37/22
代理机构
代理人
主权项
地址
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