Number | Date | Country | Kind |
---|---|---|---|
8401174 | Apr 1984 | NLX |
Number | Name | Date | Kind |
---|---|---|---|
3354397 | Wittig | Nov 1967 | |
3370254 | Keller | Feb 1968 | |
3582791 | Slavin | Jun 1971 | |
3611154 | Kupfer | Oct 1971 | |
3889210 | Matsuura et al. | Jun 1975 |
Entry |
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"Philips Data-Handbook--Components and Material", part 2, 12/82, pp. 19-35. |
German Amtsblatt Nr. 69/1981.1.5. |