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| Patents for Napoleon Demers | |||||
| Number | Date | Patentee | Title | Type | |
| 1,031,108 | Jul. 02, 1912 | N. Demers | Bobbin-boring machine | drilling and boring | |
| 1,112,363 | Sep. 29, 1914 | N. Demers | Apparatus for making bobbins | spool or bobbin machines | |