Number | Name | Date | Kind |
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3086195 | Halliday | Apr 1963 | |
3964014 | Tehon | Jun 1976 | |
4586512 | Do-huu et al. | May 1986 | |
5099459 | Smith | May 1992 | |
5115810 | Watanabe et al. | May 1992 | |
5235986 | Masak et al. | Aug 1993 |
Number | Date | Country |
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0401027 | May 1990 | EPX |
Entry |
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"Bow-Tie Transducers For Measurement of Anisotropic Materials in Acoustic Microscopy", Douglas A. Davids et al., Proc. 1986 Ultrasonics Symposium, pp. 735-740. |
"Spatial Apodisation Using Modular Composite Structures", publ. in Proceedings of 1989 Ultrasonics Symposium at pp. 767-770 (1989). |