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公开(公告)号:US2844066A
公开(公告)日:1958-07-22
申请号:US24234751
申请日:1951-08-17
Applicant: DU PONT
Inventor: FRIEL DANIEL D
CPC classification number: G01N21/35 , G01J1/18 , G01N21/274 , G01N21/3504
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公开(公告)号:US2909924A
公开(公告)日:1959-10-27
申请号:US47553354
申请日:1954-12-15
Applicant: DU PONT
Inventor: FLOOK JR WILLIAM M , FRIEL DANIEL D
IPC: G01J5/62
CPC classification number: G01J5/62
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公开(公告)号:US2784319A
公开(公告)日:1957-03-05
申请号:US52357355
申请日:1955-07-21
Applicant: DU PONT
Inventor: FLOOK JR WILLIAM M , FRIEL DANIEL D
IPC: G01N23/08
CPC classification number: G01N23/083
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