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| All Patents in class 193/27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 512,377 | Jan. 09, 1894 | F.X. Hooper | Apparatus for drying printed or varnished paper | ||
| 2,840,211 | Jun. 24, 1958 | F.F. Zawaski | Drop Track Construction | workpiece changers and storage mechanisms | |