Shinano Kikaku Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4888649 Noncopiably recorded videotape and noncopiably videotape-recording systemExpiredMar 18, 88Dec 19, 89[H04N]
4475129 Non-copiable videotape recording systemExpiredJul 21, 82Oct 02, 84[H04N]
4426135 Lens attchment for forming wide-ranging imagesExpiredJan 22, 80Jan 17, 84[G02B]
4245404 Audio-visual teaching machineExpiredJan 23, 79Jan 20, 81[G09B]

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