Number | Name | Date | Kind |
---|---|---|---|
2808524 | Feinstein | Oct 1957 | |
3030606 | Harris | Apr 1962 | |
3241373 | Ricketts et al. | Mar 1966 | |
3374663 | Morris | Mar 1968 | |
3832580 | Yamamuro et al. | Aug 1974 |
Entry |
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Electroacoustic Transducers w/Piezoelectric High Polymer Films, by Tamura et al., JAES, vol. 23, No. 1, Jan./Feb., 1975. |