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| All Patents in class 73/529 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,082,383 | Dec. 23, 1913 | A. Winton | Speed Governor | internal combustion engine governors | |
| 5,250,896 | Oct. 05, 1993 | R.D. Johnson, R.J. Holmen, D. Mieczkowski, J.E. Stanley | Hand-Held Magnetic Contact Tachometer with Toothed Rotatable Wheel | ||
| 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 | ||