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| Patents for Walter P. Smith | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 183,397 | Oct. 17, 1876 | L.D. Howard | Improvement in mitering-machines | |
 | 356,642 | Jan. 25, 1887 | L.D. Howard | Machine-table | |
 | 709,577 | Sep. 23, 1902 | L.D. Howard | Drop-hammer | |