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| Patents for C. M. Gellert | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,089,442 | Mar. 10, 1914 | W.T. Sears | Radial drill | radial drill presses | |
| 1,182,170 | May 09, 1916 | B.M. Hanson | Head-stock | metal lathes | |
| 1,187,730 | Jun. 20, 1916 | B.M. Hanson | Milling-machine | milling machines | |
| 1,200,610 | Oct. 10, 1916 | B.M. Hanson | Metal-working machine | milling machines | |
| 1,202,997 | Oct. 31, 1916 | B.M. Hanson | Tail-stock | metal lathes | |
| 1,211,840 | Jan. 09, 1917 | B.M. Hanson | Metal-working machine | metal lathes | |