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发明名称
Improvements in or relating to removable closures
摘要
申请公布号
GB684760(A)
申请公布日期
1952.12.24
申请号
GB19490011610
申请日期
1949.05.02
申请人
NATIONAL RESEARCH DEVELOPMENT CORPORATION
发明人
FOXON FREDERICK ALBERT
分类号
H01J5/30;H01T1/00
主分类号
H01J5/30
代理机构
代理人
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地址
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