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发明名称
Means preventing passage of gas through refractory walls
摘要
申请公布号
US1971915(A)
申请公布日期
1934.08.28
申请号
US19300470203
申请日期
1930.07.23
申请人
UNIVERSAL OIL PRODUCTS COMPANY
发明人
MEKLER LEV A.
分类号
F27D1/00
主分类号
F27D1/00
代理机构
代理人
主权项
地址
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