Number | Date | Country | Kind |
---|---|---|---|
8901033 | Apr 1989 | NLX |
Number | Name | Date | Kind |
---|---|---|---|
3763478 | Yoshizawa et al. | Oct 1973 | |
4626715 | Ishii | Dec 1986 | |
4728826 | Einzinger et al. | Mar 1988 | |
4873460 | Ripple | Oct 1989 | |
4897559 | Yun-Ho | Jan 1990 | |
4902914 | Masouka | Feb 1990 | |
4950919 | Rossi et al. | Aug 1990 |
Number | Date | Country |
---|---|---|
3233204 | Mar 1983 | DEX |
Entry |
---|
Weijten; "Philips Technical Review"; Dec. 1986. |