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| Patents for H. Rydquist | |||||
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| Number | Date | Patentee | Title | Type | |
| 189,615 | Apr. 17, 1877 | W. Eberhard | Pipe-Wrench | pipe wrenches | |
| 194,594 | Aug. 28, 1877 | H.W. Fuller | Improvement in Calf-Muzzles | animal weaners | |
| 531,790 | Jan. 01, 1895 | R. Eickemeyer | Method of operating or controlling electric motors or dynamos | ||