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公开(公告)号：CA604489A
公开(公告)日：1960-08-30
申请号：CA604489D
Applicant: BECKMAN INSTRUMENTS INC
Inventor： WARD WILLIAM M , ASHLEY JOSEPH
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公开(公告)号：US2948185A
公开(公告)日：1960-08-09
申请号：US71714658
申请日：1958-02-24
Applicant: BECKMAN INSTRUMENTS INC
Inventor： WARD WILLIAM M , JOSEPH ASHLEY
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