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All Patents in class 403/401 | |||||
Number | Date | Patentee | Title | Type | |
RE9,582 | Feb. 22, 1881 | O.G. Stratton | Bit stock and shank | braces | |
1,246,184 | Nov. 13, 1917 | H. Terhune | Drop-hammer | drop hammers | |
2,512,177 | Jun. 20, 1950 | S. Shaler | Steel square | carpenter squares |