Number | Name | Date | Kind |
---|---|---|---|
4049954 | Da Costa Viera et al. | Sep 1977 | |
4420980 | Dunemann et al. | Dec 1983 | |
4567747 | Matay | Feb 1986 |
Number | Date | Country |
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54-99665 | Aug 1979 | JPX |
Entry |
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"An Integrated Circuit Pulse Echo Overlap Facility for Measurement of Velocity of Sound" by A. G. Hellier, S. B. Palmer, and D. G. Whitehead, (Journal of Physics E, vol. 8, No. 5, pp. 352-354, May 1975). |