Number | Date | Country | Kind |
---|---|---|---|
2842450 | Sep 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3970828 | Klein | Jul 1976 | |
4142680 | Oswald et al. | Mar 1979 | |
4168525 | Russell | Sep 1979 | |
4186298 | Kinbara | Jan 1980 | |
4192130 | Takeuchi | Mar 1980 |
Entry |
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Begley et al., "Precision Timing Systems: Part I, Standard Scales", Instruments and Control Systems-Sep. 1970, pp. 87-89. |