Number | Date | Country | Kind |
---|---|---|---|
3701296 | Jan 1987 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3875400 | Pao et al. | Apr 1975 | |
4196346 | McElhannon | Apr 1980 | |
4664518 | Pfund | May 1987 | |
4691385 | Tupman | Sep 1987 | |
4710028 | Grenier et al. | Dec 1987 |
Entry |
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Plotkin et al., "Optical Communication in Free Space", Chapter 3, Report No: AGARO-AG-195, 12/74, pp. 3-1 to 3-9. |