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| All Patents in class 33/27.12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 349,203 | Sep. 14, 1886 | B.B. Smith, J.F. Bennett | Draftsman's Compass | compasses | |
| 434,465 | Aug. 19, 1890 | C.W. Reeves | Instrument for Drawing Irregular Curves, Ellipses, &c. | compasses | |
| 2,259,472 | Oct. 21, 1941 | C. Johnson | Duplicator for machine tools | milling machine accessories | |