Invention Grant
- Patent Title: Optical change detection device
- Patent Title (中): 光学变化检测装置
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Application No.: US31419763Application Date: 1963-10-07
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Publication No.: US3386788APublication Date: 1968-06-04
- Inventor: DREYER JOHN F
- Applicant: POLACOAT INC
- Assignee: Polacoat Inc
- Current Assignee: Polacoat Inc
- Priority: US31419763 1963-10-07
- Main IPC: G01J1/48
- IPC: G01J1/48
Information query
