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| All Patents in class 470/56 | |||||
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| Number | Date | Patentee | Title | Type | |
| 19,123 | Jan. 19, 1858 | J.P. Blake | Machine for covering the heads of trunk-nails | ||
| 1,779,674 | Oct. 28, 1930 | A.M. Johnson | Rotary work support | tapping machines | |