Number | Name | Date | Kind |
---|---|---|---|
2531844 | Fiedler | Nov 1950 | |
2827978 | Henry | Mar 1958 | |
2874794 | Kiernan | Feb 1959 | |
2939542 | Weller et al. | Jun 1960 | |
3626364 | Simon | Jun 1971 | |
3915017 | Robinson | Oct 1975 |
Entry |
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Hueter et al., Sonics, John Wiley and Sons, Inc., New York, 1955 pp. 45-49. |
J. A. Rooney, Determination of Acoustic Power Outputs in the Microwatt--Milliwatt Range, Ultrasound in Med. and Biol., vol. 1, No. 1, Sep. 1973, p. 13-16, Pergamon Press, Gr. Br. |