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1.发明授权Adjustable light aperture, particularly a slit in a diaphragm in an optical system 失效可调光孔，特别是在光学系统中的隔膜中的狭缝
公开(公告)号：US3397025A
公开(公告)日：1968-08-13
申请号：US37829964
申请日：1964-06-26
Applicant: RASMUS STRANDE ALM
Inventor： STRANDE ALM RASMUS
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