Number | Date | Country | Kind |
---|---|---|---|
74.10301 | Mar 1974 | FR |
Number | Name | Date | Kind |
---|---|---|---|
3505572 | Yamashita et al. | Apr 1970 | |
3787786 | Defebvre et al. | Jan 1974 | |
3826865 | Quate et al. | Jul 1974 | |
3826866 | Quate et al. | Jul 1974 | |
3893047 | Lardat | Jul 1975 |
Entry |
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"Planar Beam Steering Bulk Acoustic Wave Transducer", by L. Kuhn, IBM Technical Disclosure Bull., vol. 15, No. 10, 3/73, pp. 3275-3276. |