Referenced by|
| US4181816 | Apr 3, 1969 | Jan 1, 1980 | Thomson - CSF | Devices for combining random sequences, using one or more switching operations | | US4349915 | Feb 2, 1981 | Sep 14, 1982 | General Electric Company | Minimization of multipath and doppler effects in radiant energy communication systems | | US4597087 | Oct 19, 1984 | Jun 24, 1986 | ITT Corporation | Frequency hopping data communication system | | US4802220 | Mar 20, 1985 | Jan 31, 1989 | American Telephone and Telegraph Company, AT&T Bell Laboratories | Method and apparatus for multi-channel communication security | | US4866771 | Jan 20, 1987 | Sep 12, 1989 | The Analytic Sciences Corporation | Signaling system |
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