Patent search ap:("BECKMAN INSTRUMENTS INC") AND inv:"RIESS GOTTFRIED" Page 1

1.

发明授权
Calibration circuit for photometric analyzers 失效
Title translation: 光学分析仪的校准电路

公开(公告)号：US3525942A

公开(公告)日：1970-08-25

申请号：US3525942D

申请日：1968-02-19

Applicant: BECKMAN INSTRUMENTS INC

Inventor： BORONKAY ATTILA D , KEAHL GERALD T , RIESS GOTTFRIED

IPC: G01N21/27 , G06G7/28 , G06G7/12

CPC classification number: G06G7/28 , G01N21/27

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