Invention Grant
US3261977A Stereoscopic optical viewing system with a shutter element adjacent the object lens
失效
具有靠近物镜的快门元件的立体光学观察系统
- Patent Title: Stereoscopic optical viewing system with a shutter element adjacent the object lens
- Patent Title (中): 具有靠近物镜的快门元件的立体光学观察系统
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Application No.: US13393861Application Date: 1961-08-25
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Publication No.: US3261977APublication Date: 1966-07-19
- Inventor: VELDEN CORNELIUS G J M VAN DER
- Applicant: LAB FOR ELECTRONICS INC
- Assignee: Lab For Electronics Inc
- Current Assignee: Lab For Electronics Inc
- Priority: US13393861 1961-08-25
- Main IPC: A61B6/02
- IPC: A61B6/02 ; G02B27/22
Public/Granted literature
- US08807102B2 Variable valve operating device for internal combustion engine Public/Granted day:2014-08-19
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