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| All Patents in class 33/578 | |||||
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| Number | Date | Patentee | Title | Type | |
| 586,393 | Jul. 13, 1897 | L.H. Pynten | Mortise and Marking-Gage | marking gauges | |
| 800,257 | Sep. 26, 1905 | A.E. Abetz | Compass Leg and Point | compasses | |
| 1,431,522 | Oct. 10, 1922 | M.E. Hayman | Riveting Gage | special purpose gauges | |
| 1,433,820 | Oct. 31, 1922 | H.H. Huesman | Combination Height Gauge, Surface Gauge, Scriber, etc. | surface gauges | |
| 2,092,653 | Sep. 07, 1937 | H.M. Nielsen | Transfer-punch buttons | layout tools | |