Diazo printing apparatus

Diffractive subtractive color filter responsive to angle of...

Diffuser for color analyser

Diffusion transfer camera processor

Digital auto focus system

Digital camera device with internal printer

Digital camera with interactive printer

Digital control unit for projector automation systems

Digital image processing system for the manufacture of...

Digital motor control system

Digital projection equipment and techniques

Digital projector automation

Digital reproduction of variable density film soundtracks

Digital sound system for motion pictures with analog sound...

Digitally encoded alpha-numeric projector slide and systems...

Diode circuit for sequentially flashing photoflash lamps

Direct illumination projector

Direct reading optical measuring device

Disc camera drive

Discharge lamp and lamp device