Audio-visual tunnel with endless conveyor

Audiovisual system including wall-integrated audiovisual...

Audiovisual system with improved moving light pointer

Augmented imaging using a silhouette to improve contrast

Augmented imaging using a silhouette to improve contrast

Augmented imaging using silhouette to improve contrast

Auto-focusing method and projector using the same

Auto-stereoscopic viewing system using mounted projection

Autoloading microfiche reader

Automated photograph slide storage and retrieval system

Automated transparency organizer

Automatic distributor for flat rigid pieces

Automatic door mechanism for projector

Automatic focus adjustment for projector

Automatic focus for overhead projector

Automatic focusing device for slide projectors

Automatic focusing projector

Automatic focusing system

Automatic focusing system for projectors

Automatic follow-up projecting system