Cytrol Incorporated

CYLOCK

A SECURITY SYSTEM FOR PERSONAL COMPUTERS CONSISTING OF AN EXPANSION CIRCUIT BOARD FOR THE PERSONAL COMPUTER, A KEY RECEPTACLE WITH CONNECTOR CABLE, A KEY DEVICE HAVING A SEMICONDUCTOR MEMORY IN WHICH ACCESS AND SECURITY CODES ARE ELECTRONICALLY RECORDED, A PRERECORDED COMPUTER PROGRAM AND A USER'S MANUAL SOLD AS A UNIT;THE LINING SHOWN IN THE MARK IS A FEATURE OF THE MARK AND IS NOT INTENDED TO INDICATE COLOR.;