Projection apparatus for photographic transparencies and a devic

Projector for transparent file sheet

Random access image retrieval apparatus

Reader for microfiches with a display for image-field coordinate

Reading device

Retrieval control apparatus for microfilm reader

Retrieving images stored on windowed discs

Roll film document image storage and retrieval apparatus and sys

Roll film reader/printer with manually insertable discrete film

Rotary film strip holding apparatus

Selection for microfiche cartridge

Selectively positionable slide tray position sensing arrangement

Selector interlock for microfiche cartridge

Shopping aid display viewer

Slide projector control apparatus

Slide projector having two image-projection systems which operat

Slide projector with ergonomic slide selection and access

Slide tray position sensing arrangement for slide projector appa

Stop-motion mechanism

System for controlling reproduction of audio tape in synchronism