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发明名称
Liquid protector for air purifying canisters
摘要
申请公布号
US2478054(A)
申请公布日期
1949.08.02
申请号
US19400350570
申请日期
1940.08.03
申请人
MINE SAFETY APPLIANCES COMPANY
发明人
RAY KENNETH B.;YANT WILLIAM P.
分类号
A62B23/00
主分类号
A62B23/00
代理机构
代理人
主权项
地址
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