75878875
Dec 23, 1999
COMPUTER SOFTWARE, HARDWARE AND PROTECTION SYSTEMS RELATED TO COPY PROTECTION FOR AUDIO CONTENT ON CD'S DVD'S AND OTHER MEDIA
Electrical and Scientific ApparatusPROVIDING COPY PROTECTION TO COMPUTER SOFTWARE AND PROTECTION SYSTEMS RELATED TO COPY PROTECTION FOR AUDIO CONTENT ON CD'S, DVD'S AND OTHER MEDIA TO THOSE WHO CONTROL THE USE OF SUCH MEDIA
Treatment of Materials