Invention Grant
- Patent Title: Eye examining instrument
- Patent Title (中): 眼睛检查仪器
-
Application No.: US42044230Application Date: 1930-01-13
-
Publication No.: US1852837APublication Date: 1932-04-05
- Inventor: DANIEL DESMOND , BAKER NELSON M
- Applicant: AMERICAN OPTICAL CORP
- Assignee: American Optical Corp
- Current Assignee: American Optical Corp
- Priority: US42044230 1930-01-13
- Main IPC: A61B3/12
- IPC: A61B3/12
Information query
