Patent search ap:("YALE GORDON A") AND inv:"YALE GORDON A" Page 1

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发明授权
Comparator for assisting in the identification of unknown stains, colors, or the like 失效
Title translation: 帮助识别未知污渍，颜色等的比较器

公开(公告)号：US2647433A

公开(公告)日：1953-08-04

申请号：US11126249

申请日：1949-08-19

Applicant: YALE GORDON A

Inventor： YALE GORDON A

IPC: G01J3/02 , G01J3/10 , G01J3/46 , G01J3/52

CPC classification number: G01J3/02 , G01J3/0267 , G01J3/10 , G01J3/46 , G01J3/463 , G01J3/522

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