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公开(公告)号：US3454339A
公开(公告)日：1969-07-08
申请号：US3454339D
申请日：1966-05-27
Applicant: PERKIN ELMER CORP
Inventor： MARSHALL HAMILTON W JR , HELMS CHARLES C
IPC: G01J3/18
CPC classification number: G01J3/04 , G01J3/0229 , G01J3/1804
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