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| All Patents in class 324/161 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,396,427 | Mar. 07, 1995 | C.F. Govekar, G.S. Wollert, R.D. Braun, J.R. Piehl | Method and Apparatus for Determining Relative Contributions of Individual Cylinders of Internal Combustion Engine | ||