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| All Patents in class 470/178 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,111,833 | Sep. 29, 1914 | F.C. Hoffman | Nut-tapping machine | ||
| 1,254,176 | Jan. 22, 1918 | L.W. Thorsell | Automatic Thread Rolling Machine | ||
| 1,607,614 | Nov. 23, 1926 | J.H. Graham | Tapping machine | tapping machines | |
| 1,687,134 | Oct. 09, 1928 | W.S. Gilmour, J.M. Lynch | Machine for feeding headed blanks | ||
| 1,955,775 | Apr. 24, 1934 | B.P. Schiltz | Apparatus for handling work pieces | metalworking machines | |