Number | Date | Country | Kind |
---|---|---|---|
3832242 | Sep 1988 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4488292 | Troost | Dec 1984 | |
4491944 | Caizergues et al. | Jan 1985 | |
4499461 | Schneider | Feb 1985 | |
4499575 | Dupuis et al. | Feb 1985 | |
4694452 | Beckinger et al. | Sep 1987 | |
4763316 | Schaich et al. | Aug 1988 | |
4821263 | Lundh | Apr 1989 | |
4839888 | Baltz et al. | Jun 1989 | |
4901347 | Schmidt et al. | Feb 1990 | |
4905220 | Junge et al. | Feb 1990 |
Number | Date | Country |
---|---|---|
0032451 | Feb 1985 | JPX |
0835406 | Mar 1984 | ZAX |
Entry |
---|
Telecom Report, 1981, vol. 4, pp. 4-66. |