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| All Patents in class 73/862.09 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,991,826 | Feb. 19, 1935 | J.L. Taylor | Dynamometer | dynamometers | |
| 3,402,600 | Sep. 24, 1968 | S.E. Athey | Electric motor testing apparatus | ||