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| Patents for Grand Rapids Machinery Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 449,696 | Apr. 07, 1891 | W.J. Perkins | Miter-cutting machine | miter machines | |
| 751,121 | Feb. 02, 1904 | C.H. Tidey | Automatic gage | circular saw accessories | |