Invention Grant
- Patent Title: Composite pigment
- Patent Title (中): 复合颜料
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Application No.: US32640928Application Date: 1928-12-15
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Publication No.: US1864504APublication Date: 1932-06-21
- Inventor: O'BRIEN WILLIAM J
- Applicant: KREBS PIGMENT AND COLOR CORP
- Assignee: Krebs Pigment And Color Corp
- Current Assignee: Krebs Pigment And Color Corp
- Priority: US32640928 1928-12-15
- Main IPC: C09C1/00
- IPC: C09C1/00
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