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| Patents for Clarence F. Stewart | |||||
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| Picture | Number | Date | Patentee | Title | |
| 351,292 | Oct. 19, 1886 | C.F. Stewart | Machine for making dowel-pins | ||
| 435,463 | Sep. 02, 1890 | C.F. Stewart | Machine for making dowel-pins | ||
| 608,924 | Aug. 09, 1898 | C.F. Stewart | Dowel-pin-pointing machine | ||
| 859,262 | Jul. 09, 1907 | C.F. Stewart | Dowel pin pointing and grooving machine | ||