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All Patents in class 74/828 | |||||
Number | Date | Patentee | Title | Type | |
71,823 | Dec. 03, 1867 | B. Walker | Forge Hammer | power hammers | |
230,612 | Aug. 03, 1880 | C.M. Brown | Power-hammer | trip and helve hammers | |
1,017,916 | Feb. 20, 1912 | G.H. Rowe | Power Hammer | power hammers | |
1,154,667 | Sep. 28, 1915 | H.C. Smith | Power-Hammer | power hammers |