Data carrier having an optically variable element and...

Data carrier with an optically variable element

Data communication system for hand-held computers

Data communication system for printer and handheld computer

Data communications and illuminated light on the same optical fi

Data communications coupler and lens for tractor/trailer

Data communications system that prevents undesired coupling betw

Data encoded optical pulse generator

Data identifying device and light receiver using the same

Data imprinting apparatus

Data multiplexing node for line array

Data read/write device for holographic WORM and method thereof

Data system for storing holographic media

Data transfer apparatus utilizing infrared rays

Data transfer system

Data transmission control device of radio selection call receive

Data transmission on optical networks

Data transmission system

Data transmitter/receiver

Day and night film