|
| USD262738 | 5 mars 1979 | 19 janv. 1982 | Hayashi Denki Company Ltd. | Blood flow detector |
| USD266270 | 5 mars 1979 | 21 sept. 1982 | Hayashi Denki Company Ltd. | Fetus pulse and blood flow detector |
| USD266404 | 24 mars 1980 | 5 oct. 1982 | | Radioactivity spectrometer |
| USD270718 | 9 mars 1981 | 27 sept. 1983 | Halliburton Company | Field hand pump for use in the measuring of properties of drilling mud, or the like |