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公开(公告)号：US3356979A
公开(公告)日：1967-12-05
申请号：US53038566
申请日：1966-02-28
Applicant: BOUYOUCOS GEORGE J
Inventor： BOUYOUCOS GEORGE J
CPC classification number: H01C1/146 , G01N27/121
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公开(公告)号：US2740032A
公开(公告)日：1956-03-27
申请号：US42197954
申请日：1954-04-08
Applicant: BOUYOUCOS GEORGE J
Inventor： BOUYOUCOS GEORGE J
IPC: G01N27/12
CPC classification number: G01N27/121
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