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经营范围
发明名称
Detachable valve closure
摘要
申请公布号
US2657563(A)
申请公布日期
1953.11.03
申请号
US19500168325
申请日期
1950.06.15
申请人
RONSON ART METAL WORKS, INC.
发明人
BURCHETT RAY L.
分类号
F23Q2/16;F23Q2/34
主分类号
F23Q2/16
代理机构
代理人
主权项
地址
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