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| All Patents in class 168/42 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 336,863 | Feb. 23, 1886 | W.S. McGowan, Jr. | Horseshoe | |
 | 470,702 | Mar. 15, 1892 | W. Pearce | Horseshoe Calk | |
 | D27,542 | Aug. 17, 1897 | R. Whitaker | Horseshoe Calk | |
 | 599,712 | Mar. 01, 1898 | W.R. Kinnear | Horseshoe | |
| 605,766 | Jun. 14, 1898 | R. Whitaker | Manufacturing horseshoe-calks and the like | ||