Number | Date | Country | Kind |
---|---|---|---|
54-107190 | Aug 1979 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4164873 | Bottcher et al. | Aug 1979 |
Number | Date | Country |
---|---|---|
52-86388 | Jul 1977 | JPX |
270317 | Aug 1970 | SUX |
Entry |
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G. J. Parkinson et al., "Non-Contact Ultrasonics", British Journal of NDT, pp. 178-184, Jul. 1977. |