Data storage and quick retrieval unit

Dating device for cameras

Daylight film handling system

Daylight projection screen and method and apparatus for...

Daylight reprographic camera

Daylight x-ray cassette having a weight to improve film release

Daylight x-ray cassette having variable size leaf springs

Dead bulb sensing mechanism

Decorative back-lighted slide viewing frame

Decouplable image projection device for use with docking...

Delay line circuit for sequentially flashing photoflash lamps

Dental projection apparatus

Dental x-ray holder for use in endodontics

Desk level overhead projector

Detection of inconsistencies between a reference and a multi...

Developing camera

Device and method of creation motion picture in the window...

Device disabling double exposure prevention for testing camera

Device for adjusting shutter opening of motion picture camera

Device for compensating cylindrical distortion in panoramic...