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All Patents in class 470/179 | |||||
Number | Date | Patentee | Title | Type | |
1,679,529 | Aug. 07, 1928 | A.M. Johnson | Automatic machine tool | tapping machines | |
1,687,134 | Oct. 09, 1928 | J.M. Lynch, W.S. Gilmour | Machine for feeding headed blanks |