Patent search ap:("DI SALVO BEATRIX GROSS") AND inv:"DI SALVO BEATRIX GROSS" Page 1

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发明授权
Color guide and harmony selector 失效
Title translation: 颜色指南和和声选择器

公开(公告)号：US2916833A

公开(公告)日：1959-12-15

申请号：US62385156

申请日：1956-11-23

Applicant: DI SALVO BEATRIX GROSS

Inventor： DI SALVO BEATRIX GROSS

IPC: G01J3/52

CPC classification number: G01J3/528 , G01J3/522

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