Contact duplication of magnetically recorded information without
Contact duplication system using anisotropic magnetic recording
Contact magnetic printing of magnetic media using actuated...
Contact magnetic transfer of servo pattern to rigid...
Contact printing apparatus with presettable means indicating num
Contact printing of magnetic media with mechanically...
Copy timing control circuit for double-deck video cassette recor
Copying apparatus for copying a magnetic pattern from a master m
Data accumulation system
Data copying method for disk storage medium
Data storage device
Device and method for contact patterning of dual-sided...
Device for recording and playing back information signals
Device for recording signal so as to facilitate effective...
Device for reproducing the recorded content of a magnetic card
Device for switching between multiple recording media based on a
Digital data duplicating system
Digital displacement transducer and method for measurement
Digital recording and reproducing apparatus for high-speed copyi
Disk biasing for manufacture of servo patterned media