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| All Patents in class 285/114 | |||||
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| Number | Date | Patentee | Title | Type | |
| 213,278 | Mar. 18, 1879 | F.M. Campbell | Adjustable Grain Spout | grain spouts | |
| 1,253,149 | Jan. 08, 1918 | W. Childers | Drilling Tool Joint | ||
| 2,668,557 | Feb. 09, 1954 | W.G. Hoelscher | Conduit System for Machine Tools | metal lathe mechanisms | |