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公开(公告)号：US3502890A
公开(公告)日：1970-03-24
申请号：US3502890D
申请日：1965-06-10
Applicant: CARY INSTRUMENTS
Inventor： HEDELMAN SIDNEY
CPC classification number: G01J1/42 , G01J1/04 , G01J1/0403 , G01J3/08 , G01J2001/0481
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