Number | Date | Country | Kind |
---|---|---|---|
8602017 | Jan 1986 | GBX |
Filing Document | Filing Date | Country | Kind | 102e Date | 371c Date |
---|---|---|---|---|---|
PCT/GB87/00050 | 1/27/1987 | 11/12/1987 | 11/12/1987 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO87/04529 | 7/30/1987 |
Number | Name | Date | Kind |
---|---|---|---|
3699463 | Stone | Oct 1972 | |
4221960 | Maeda et al. | Sep 1980 | |
4287606 | Lutes, Jr. et al. | Sep 1981 |
Number | Date | Country |
---|---|---|
8002467 | Nov 1980 | AUX |
8200736 | Mar 1982 | EPX |
2850374 | Jun 1978 | DEX |
2022856 | Dec 1979 | GBX |
Entry |
---|
Patents Abstracts of Japan, vol. 7, No. 119 (E-177) [1264], 24th May 1983; & JPA-58-39-084 (Nippon Denki K.K.), 07-03-1983. |
English Translation of Japanese Patent Application No. 58-39084-(2 sheets). |
Patent Abstracts of Japan, vol. 6, No. 38 (E-144) [1116], 26th Nov. 1982; & JP-A-57 139 979 (Nippon Denki K.K.), 30-08-1982. |
Demodulation of Optical DPSK Using In-Phase and Quadrature Detection by T. G. Hodgkinson et al., 31 Jul. 1985-pp. 867-868. |