Patent search ap:("ARTHUR HOWLAND") AND inv:"ARTHUR HOWLAND" Page 1

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发明授权
Compounding colors and apparatus for same 失效
Title translation: 复合颜色和装置相同

公开(公告)号：US1400552A

公开(公告)日：1921-12-20

申请号：US3735915

申请日：1915-06-30

Applicant: ARTHUR HOWLAND

Inventor： ARTHUR HOWLAND

IPC: G01J3/46 , G01J3/52

CPC classification number: G01J3/461 , G01J3/52

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