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公开(公告)号：US3447873A
公开(公告)日：1969-06-03
申请号：US3447873D
申请日：1966-03-10
Applicant: BECKMAN INSTRUMENTS INC
Inventor： ASHLEY JOSEPH , KEAHL GERALD THOMAS
CPC classification number: G01J3/26 , G01J3/06 , G01J3/18 , G01J2003/1204 , G01J2003/1226 , G01J2003/1828
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2.发明授权Two wavelength infrared analyzer having a pair of variable interference filters for determining the respective wavelengths 失效具有可变干涉滤光片的两个波长红外分析仪用于确定相应的波长
公开(公告)号：US3435209A
公开(公告)日：1969-03-25
申请号：US3435209D
申请日：1966-03-10
Applicant: BECKMAN INSTRUMENTS INC
Inventor： KEAHL GERALD THOMAS
CPC classification number: G01N21/314
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