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| All Patents in class 474/150 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,661X | May 17, 1836 | S.H. Freeman | Mill wheel | ||
| 238,971 | Mar. 15, 1881 | L.H. Sanderson | Lathe | jewelers lathes | |
| 287,209 | Oct. 23, 1883 | E.J. Worcester | Drilling-machine | woodworking post drills | |
| 773,591 | Nov. 01, 1904 | C.D. Rice | Multiple-spindle drill-press | drill presses | |
| 2,528,686 | Nov. 07, 1950 | S.S. Brown | Motor drive unit | gear motors | |
| 2,613,544 | Oct. 14, 1952 | O. Cullman | Mounting for transmission gearing and guard | ||