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| Patents for L. D. Howard | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 70,570 | Nov. 05, 1867 | L.D. Howard | Improvement in bevels | |
 | 183,397 | Oct. 17, 1876 | L.D. Howard | Improvement in mitering-machines | |
 | 314,843 | Mar. 31, 1885 | L.D. Howard | Miter-sawing machine | |
 | 324,323 | Aug. 11, 1885 | L.D. Howard | Combined try-square and bevel | |
 | 356,642 | Jan. 25, 1887 | L.D. Howard | Machine-table | |
 | 513,326 | Jan. 23, 1894 | L.D. Howard | Power-hammer | |
 | 657,114 | Sep. 04, 1900 | L.D. Howard | Power-hammer | |
 | 709,577 | Sep. 23, 1902 | L.D. Howard | Drop-hammer | |