Number | Name | Date | Kind |
---|---|---|---|
4738522 | Loude et al. | Apr 1988 | |
5181122 | Ooishi | Jan 1993 | |
5221083 | Dote | Jun 1993 | |
5255028 | Biles | Oct 1993 | |
5276524 | Inoue et al. | Jan 1994 | |
5291297 | Steinmey | Mar 1994 | |
5457508 | Ichihara et al. | Oct 1995 | |
5639151 | McNelley et al. | Jun 1997 | |
5669685 | Kotani et al. | Sep 1997 |
Entry |
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3M Optical Systems Light Control Film ( no date). |
SID 91 Digest 16:2: A Large Screen Visual Telecommunication Device Enabling Eye Contact, Shinichi Shiwa, Morito Ishibashi NTT Human Interface Laboratories, Yokosuka, Japan, 1991 (no month). |