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经营范围
发明名称
Soil penetrometer
摘要
申请公布号
US3379052(A)
申请公布日期
1968.04.23
申请号
US19650488384
申请日期
1965.09.20
申请人
EARLE A. HOWARD;GEORGE M. HOTZ;ROBERT P. BRYSON
发明人
HOWARD EARLE A.;HOTZ GEORGE M.;BRYSON ROBERT P.
分类号
E02D1/02;E21B19/22
主分类号
E02D1/02
代理机构
代理人
主权项
地址
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