发明名称 Film transparency slide carrier and conveyor system for front screen projection system
摘要 A slide carrier and cooperating guide assembly are disclosed which provide for quick location and precise positioning of film transparencies at a determined focus point in a projector. Slide carriers introduced to the guide assembly are readily interchangeable to allow easy selection of a desired film transparency for projection.
申请公布号 US4832482(A) 申请公布日期 1989.05.23
申请号 US19880152647 申请日期 1988.02.04
申请人 LIFETOUCH NATIONAL SCHOOL STUDIOS, INC. 发明人 KALLENBERG, KARL J.
分类号 G03B15/10;G03B23/12 主分类号 G03B15/10
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