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发明名称
Sight glass assembly
摘要
申请公布号
US2461989(A)
申请公布日期
1949.02.15
申请号
US19460650998
申请日期
1946.02.28
申请人
LE ROY GENE
发明人
ROY GENE LE
分类号
F16L55/00
主分类号
F16L55/00
代理机构
代理人
主权项
地址
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