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| Patents for Charles R. Gabriel | |||||
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| Number | Date | Patentee | Title | Type | |
| 680,482 | Aug. 13, 1901 | C.R. Gabriel | Milling Machine | milling machines | |
| 696,034 | Mar. 25, 1902 | C.R. Gabriel | Grinding-machine | grinders | |
| 786,353 | Apr. 04, 1905 | C.R. Gabriel | Screw Machine | screw machines | |
| 1,620,534 | Mar. 08, 1927 | C.R. Gabriel | Press | punch presses | |