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| Patents for Transmitting Dynamometer Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 248,612 | Oct. 25, 1881 | H. Ruddick | Recording Dynamometer | dynamometers | |
| CA-14,092 | Jan. 30, 1882 | H. Ruddick | Perfectionnement des Dynamometres-Compteurs | dynamometers | |