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| All Patents in class 73/49.7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,187,974 | Feb. 23, 1993 | G.S. Wollert, R.D. Braun, K.E. Mellits | Vehicular pressure-testing apparatus | ||
| 5,763,764 | Jun. 09, 1998 | D.J. Caldwell, E.T. Gisske, R.D. Braun, M.M. Crass, T.P. Becker, M.J. Hasenberg, D. Mieczkowski | Evaporative Emission Tester | ||