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| Patents for W. H. Spencer | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 59,683 | Nov. 13, 1866 | D.S. Trout | Improvement in Wheelwright's Machines | |
 | 556,015 | Mar. 10, 1896 | C.D. Marsh | Molding or sticking machine | |
 | 917,070 | Apr. 06, 1909 | E.P. Holly | Impelling Device | |