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| All Patents in class 411/955 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 169,425 | Nov. 02, 1875 | S.H. Dickerson | Pipe-Tongs | |
 | 221,299 | Nov. 04, 1879 | W. Gray | Nut-Lock | |
| 1,154,666 | Sep. 28, 1915 | H.C. Smith | Power Hammer | ||
 | 1,211,582 | Jan. 09, 1917 | F.G. Hobart | Piston-pin-locking mechanism | |