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| Patents for Granger Foundry & Machine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 437,157 | Sep. 23, 1890 | H.W. Honeyman | Tapping attachment for drill press | tapping machines | |
| 680,863 | Aug. 20, 1901 | H.W. Honeyman | Grinding device | grinders | |