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发明名称
Seismograph blasting cap
摘要
申请公布号
US2189741(A)
申请公布日期
1940.02.06
申请号
US19370174970
申请日期
1937.11.17
申请人
SOCONY-VACUUM OIL COMPANY, INCORPORATED
发明人
MINTON JOHN P.
分类号
F42B3/12;G01V1/06
主分类号
F42B3/12
代理机构
代理人
主权项
地址
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