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发明名称
Spark gap and lamp
摘要
申请公布号
US2481887(A)
申请公布日期
1949.09.13
申请号
US19480036397
申请日期
1948.07.01
申请人
SMITSVONK N. V.
发明人
SMITS WIJTZE BEYE
分类号
H01T1/00
主分类号
H01T1/00
代理机构
代理人
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地址
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