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| All Patents in class 144/20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 632,100 | Aug. 29, 1899 | L.A. Carson | Automated lathe for small articles | wood lathes | |
| 701,081 | May 27, 1902 | H.N. Pierce | Spool-machine | spool or bobbin machines | |