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| Patents for Renfrew Machinery Co., Ltd. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,125,776 | Jan. 19, 1915 | F.D. Vickers | Cream-separator | dairy machinery | |
| 1,305,616 | Jun. 03, 1919 | N.H. Norris | Combination differential direct-power drive and friction-clutch pulley | industrial machine clutches | |