Number | Date | Country | Kind |
---|---|---|---|
90 07946 | Jun 1990 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
3191118 | Jung et al. | Jun 1965 | |
3495163 | Salvi | Feb 1970 | |
4623844 | Macovski | Nov 1986 | |
4814707 | Marton | Mar 1989 | |
4916393 | Crescini et al. | Apr 1990 | |
4996311 | Moussavi et al. | Feb 1991 |
Number | Date | Country |
---|---|---|
0240221 | Oct 1987 | EPX |
0359598 | Mar 1990 | EPX |
0273129 | Nov 1989 | DEX |
1210840 | Nov 1970 | GBX |
1551236 | Aug 1979 | GBX |
Entry |
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Article by K. Weyand, published in IEEE Transactions on Instrumentation and Measurement, vol. 38, No. 2, Apr. 1989, pp. 410 to 414. |