Inventor
GOLDMARK PETER C
4 patents
Patents
4 patentsUS3955466AMay 11, 1976
Performance learning system
GOLDMARK COMMUNICATIONS CORP70 citations92
US4009331AFeb 22, 1977
Still picture program video recording composing and playback method and system
GOLDMARK COMMUNICATIONS CORP109 citations90
US3938189AFeb 10, 1976
System for recording and playing back individual frames of video and related audio signals
GOLDMARK COMMUNICATIONS CORP26 citations78
US4045819AAug 30, 1977
Video recorder and playback apparatus
GOLDMARK COMMUNICATIONS CORP5 citations58