Number | Date | Country | Kind |
---|---|---|---|
3707048 | Mar 1987 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3340466 | Ono | Sep 1967 | |
4342971 | Councilman et al. | Aug 1982 | |
4437332 | Pittaro | Mar 1984 |
Number | Date | Country |
---|---|---|
3327526 | Oct 1986 | DEX |
1121767 | Jul 1968 | GBX |
Entry |
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Technica Nr. 10, 1970, pp. 857-863, 5-1970. |
Siemens-Zeitschrift, Jul. 1966, pp. 548-554, 7-1966. |
Krautkramer: Webkstoffprufung mit Ultraschall, 1980, pp. 146-147 and pp. 153-158, 1980. |