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| All Patents in class 403/113 | |||||
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| Number | Date | Patentee | Title | Type | |
| 185 | Apr. 29, 1837 | L. Hedge | Double-Centered Joint for Rules | folding rule joints | |
| 18,558 | Nov. 03, 1857 | R.W. Stone | Joint of Carriage-Tops | ||
| 310,821 | Jan. 13, 1885 | W.A. Dromgold, S.N. Hench | Cultivator spring-hoe | cultivators and tillers | |
| 465,664 | Dec. 22, 1891 | M. Hogarty | Rule | folding rules | |
| 532,658 | Jan. 15, 1895 | G.C. Gillespie | Folding Ruler | folding rule joints | |
| 1,892,813 | Jan. 03, 1933 | E.H. Sheldon | Desk structure | ||